Montana Power Company records, 1885-1979

Overview of the Collection

Creator
Montana Power Company
Title
Montana Power Company records
Dates
1885-1979 (inclusive)
Quantity
200 linear feet of shelf space
Collection Number
UPMC 6
Summary
These Montana Power Company records consist primarily of reclassification files (1930s-1940s) related to Federal Power Commission docket IT-5825 and Montana Public Service Commission docket 2421. These cases required the company to reclassify the value of corporate assets, including dams, power transmission lines, etc. In addition there is a wide variety of other records including predecessor company files dating back to 1885, subject files dating into the 1970s, published material, etc.
Repository
Montana Historical Society, Library & Archives
Montana Historical Society Research Center Archives
225 North Roberts
PO Box 201201
Helena MT
59620-1201
Telephone: 4064442681
Fax: 4064445297
mhslibrary@mt.gov
Access Restrictions

Collection is open for research.

Languages
English

Historical NoteReturn to Top

The Montana Power Company was incorporated on December 12, 1912, as a result of a merger of the Butte Electric and Power Company, the Madison River Power Company, the United Missouri River Power Company, and the Billings and Eastern Montana Power Company. The merger was brought about by John D. Ryan, head of the Anaconda Copper Mining Company, and John G. Morony, president of the First National Bank of Great Falls. Each of the constituent companies had been formed as the result of mergers of earlier companies.

The Butte Electric and Power Company, was formed in 1901 to take over the assets and liabilities of the Butte Lighting and Power Company, which was, in turn, the successor to several local Butte power generating plants, including the Brush Electric Light and Power Company, the Silver Bow Electric Light Company, the Butte Electric Light and Power Company, the Silver Bow Electric Light and Power Company, the Butte General Electric Company, the Phoenix Electric Company, the Butte Gas Light and Coke Company, and others. The Butte Electric and Power Company's proerties also included a hydro-electric power station on the Big Hole River from The Montana Power Transmission Company, successor to the Big Hole Improvement Company; and a majority interest in several Great Falls companies including the Great Falls Street Railway Company, the Boston and Great Falls Electric and Power Company, and the Great Falls Electric Properties.

The Missouri River Electric and Power Company, was organized in 1911, as a successor to the United Missouri River Power Company (UMRPC), which had gone into receivership. The UMRPC was itself a merger of the Missouri River Power Company, the Capital City Power Company, and the Helena Power Transmission Company. By 1912 the successor company owned most of the hydro-electric facilities on the Missouri River, including the first Canyon Ferry Dam completed in 1898 by the Helena Water and Electric Power Company; the Hauser Dam built in 1907 by the Helena Power Transmission Company; and the Holter Dam, begun around 1907 by the Capital City Power Company; and, due to financial difficulties, not completed until after the merger into Montana Power Company.

The Madison River Power Company was organized in 1905 by Butte Electric and Power Company interests to take over the Nunn power plant on the Madison River from The Power Company. The Madison River Power Company also constructed the Lower Madison Development in 1906 and transmission lines to Butte. In addition the Company acquired the Bozeman Electric Light Company, the Bozeman Street Railway Company, the Gallatin Light, Power and Railway Company, and the Livingston Water Power Company.

The Billings and Eastern Montana Power Company was organized in 1908 to take over various power developments along the Yellowstone River, including the Yegan Brothers properties, the Yellowstone River Power Company, the Billings Water Power Company, the Montana Trading Company, and the Big Timber Electric Light and Power Company.

After the organization of the Montana Power Company in 1912, the company continued to consolidate power developments around the state. In 1929 several major systems were acquired. The Missoula Public Service Company, was a merger of the Missoula Light and Water Company and the Missoula Street Railway Company both developed by William A. Clark. The various Helena properties which had been consolidated under the Helena Gas and Electric Company in 1927, also became part of Montana Power Company in 1929. A third major acquisition in 1929 was the Thompson Falls Power Company, including its predecessor the Northwestern Development Company. The Great Falls Townsite Company, the Great Falls Power Company, and the Great Falls Street Railway Company were all acquired by Montana Power Company between 1931 and 1936. The last major system acquired before World War II was the Union Electric Company of Dillon, which included the properties of its predecessors the Rife Electric Company and the Dillon Electric Light and Power Company. In addition, many local utilities were added for which there are no records in this collection.

For more comprehensive information on the history of the predecessor companies see "Corporate Growth" (Box 1, Folder 2) and Douglas F. Leighton, The Corporate history of the Montana Power Company, 1882-1913, (M.A. Thesis. Montana State University, Missoula, 1951).

Content DescriptionReturn to Top

These Montana Power Company records consist primarily of reclassification files (1930s-1940s) related to Federal Power Commission docket IT-5825 and Montana Public Service Commission docket 2421. These cases required the company to reclassify the value of corporate assets, including dams, power transmission lines, etc. In addition there is a wide variety of other records including predecessor company files dating back to 1885, subject files dating into the 1970s, published material, etc.

Use of the CollectionReturn to Top

Preferred Citation

Item description and date. Collection Title. Collection Number. Box and Folder numbers. Montana Historical Society Research Center, Archives, Helena, Montana.

Administrative InformationReturn to Top

Arrangement

Collection is organized by subgroup and arranged by folder.

Location of Collection

58:1-1,83:7-5, OVERSIZE 83:6-5, VOLUMES 121:4-1, 102:7-3, 102:8-3, 103:1-1

Acquisition Information

Acquisition information available upon request

Processing Note

This collection is large and unprocessed. It was received in very poor order. This inventory is an attempt to pull materials together by subgroup. The box numbers are those assigned by the company, but are not listed in box- number order. There is a great deal of duplicate material, scattered throughout the collection. There are also comments intended to guide a future processor.

Detailed Description of the CollectionReturn to Top

Montana Power Company Return to Top

Container(s) Description Dates
Box/Folder
20-51 / 2-3
Abstract company reports: Glacier County
1938
20-51 / 4-5
Abstract company reports: Pondera County
1938-1940
20-51 / 6-8
Abstract company reports: Toole County
1938-1940
20-51 / 1
Abstracts of title: Lewis and Clark County
1913
20-77 / 6-7
Abstracts of title: Deer Lodge County pole lines, vol. 1-2
undated
20-77 / 3-5
Abstracts of title: Silver Bow County pole lines, vol. 1-3
undated
20-60 / 10
Academy of Political Science Proceedings: Popular ownership of property: its newer forms and social consequences
1925
20-82 / 7-25
Account 301-370 (includes a file on organization, and one on franchises and consents) [several copies]
undated
20-82 / 26-40
Account 301-370 et al. (files of planned testimony by various individuals)
undated
21-8 / 2
Account 301-370 general plant classification of costs
1941
21-40 / 22-26
Account 301-379 misc. work sheets etc.
1939
21-40 / 1-21
Account 301-379 original cost detail
1939
21-23 / 3
Account 342, 349 Supplemental breakdown schedule: property items
1944
20-92 / 1
Account 344-346 transmission lines unit cost
1940
21-32 / 7
Account 350 supplemental breakdown
1940
21-32 / 1-6
Account 354, 355, 358, 359 inventory summaries and index
encodinganalog="245$f"> 1940-1945
20-92 / 2
Account 354-355 distribution lines unit cost [deadly]
1940
20-91 / 1-6
Account 358 line transformers inventory
1940
20-41 / 10-11
Account 358: line transformers inventory
1939
20-41 / 10-11
Account 358: line transformers inventory
1939
20-92 / 3
Account 358 line transformers unit cost
1940
20-44 / 4-6
Account 360: electric meter inventory [3 vol.]
1939
20-41 / 9
Account 360: electric meter inventory
1939
20-91 / 7-10
Account 360 electric meters inventory
1940
21-32 / 8
Account 360 sheet meter unit costs
1937-1940
21-32 / 9
Account 363 street lighting
1937-1940
20-90 / 5
Account 370 general equipment inventory: land
1940
20-92 / 4
Account 370-379 general plant classification of costs
1940
20-90 / 6
Account 373 Butte Division electric andgas transportation equipment
1940
20-90 / 7-10
Account 374-377 general plant equipment
1940
20-92 / 6
Account: "Field inventory procedure as applied to overhead distribution system" [this apparently is how they did the numbered accounts]
1940
20-43 / 4-5
Accounting computer printout
1964
20-60 / 9
Accounts: simplification re transmission lines
1944
20-92 / 5
Account: Unit costs of plant [report: could this summarize most of the others?????]
1941
20-33 / 9-17
Acquisitions: [folder titles mostly gone; mold]
undated
20-69 / 1-39
Acquisitions file #10-48 (one folder for each company)
undated
20-45 / 15
Administrative and general expense studies
1913-1936
20-17 / 18
Agreement of consolidation
1912-1949
20-80 / 3
Agreement of consolidation
1912
05-31 / 9
Agreement of consolidation [duplicate]
1912
05-31 / 17
Agreements [misc.] temporary file
1906-1912?
05-35 / 1-8
Alphabetical file: A (includes acquisitions, American Power and Light Company, Anaconda Copper Mining Company, arc lights, automation)
1970s
05-35 / 9-39
Alphabetical file: B (includes Banks; Big Horn; Big Timber; Billings; Billings and Eastern Montana Power Company; Billings Traction Company; F.W. Bird; Black Eagle; Bozeman; Bridger; Butte; Butte, Anaconda and Pacific Railway; Butte Electric and Power Company; Butte General Electric Company; Butte Lighting Company; Byllesley)
1970s
05-32 / 1-12
Alphabetical file: C (includes Canyon Ferry, Citizens Electric Co., W.A. Clark, H.H. Cochrane, C.A. Coffin, Frank Coleman, Colstrip, Columbus, Conrey Placer Mining Company, Contracts, Copper reclassification book [another copy])
1970s
05-32 / 13-18
Alphabetical file: D (includes Dams, Deer Lodge, Dennison-Dutton, H.K. Dickinson, Dillon, Dredges)
1970s
05-32 / 19-24
Alphabetical file: E (includes Earthquake [Hebgen], electric bond, electric lighting [early], electric ranges, Electrical World clippings, employees, 1912)
1970s
05-32 / 25-27
Alphabetical file: F (includes federal government write-off data, Fort Benton, Fort Peck Dam and Fort Peck Indian Reservation irrigation project)
1970s
05-32 / 25-40
Alphabetical file: G (includes Gardiner, gas, General Electric, Paris Gibson, Gold, Great Falls, Great Falls Water Power and Townsite Company, Great Falls Electric Properties, Great Falls Power Company, Great Falls Townsite Company)
1970s
05-37 / 1
Alphabetical file: G (includes Great Northern electric railway)
1970s
05-37 / 2-14
Alphabetical file: H (includes Haganah, Harlowton, Hauser Lake, Havre, Hebgen Dam, Helena including Helena Electric Co. payrolls, history, hoists, Holter Lake, Hungry Horse Dam)
1970s
05-36 / 1
Alphabetical file: H (includes Max Hebgen)
1970s
05-37 / 15-19
Alphabetical file: I (includes S.R. Inch, insulators, industrial ads, irrigation, Iron Mountain Tunnel Co.)
1970s
05-37 / 20-23
Alphabetical file: K (includes Con Kelley, Kendall, Kerr Plant, Kroyer)
1970s
05-37 / 24-27
Alphabetical file: L (includes Lehigh, Lewistown, Libby, Livingston)
1970s
05-37 / 28-33
Alphabetical file: M (includes Charles T. Main, Maxville, merger, Mesa Power Company, missiles, Missoula)
1970s
05-36 / 2-13
Alphabetical file: M (includes Missouri River history, Missouri River Power Company, Montana Magazine articles, Montana Power Company, Montana Power Transmission Company, Montana Reservoir and Irrigation Company, Morel Line, Morony Dam, mountain sheep, Mystic Lake)
1970s
05-36 / 14
Alphabetical file: N (includes Nunn Brothers)
1970s
05-36 / 15
Alphabetical file: O (George W. O'Connor)
1970s
05-36 / 16-22
Alphabetical file: P (parallelling Washington Water Power Co. lines with Montana Power Co. lines, Parrot Development, payrolls, Phoenix Electric, plant accounts, population, power pool)
1970s
20-98 / 21
Anaconda Copper Mining Company freight settlements
1927
21-19 / 8
Analysis book, supplemental cost structures accounts 321, 341
undated
20-55 / 6
Analysis of accounts for overhead, by E.P. Mullins
1940
20-28 / 1-9
Analysis of distribution system (Helena and Great Falls divisions)
1928-1939
20-48 / 40
Analysis of investments
1940
20-90 / 1-4
Analysis of material costs
1941
20-91 / 1-6
Analysis of material costs
1940
20-68 / 6-7
Analysis of material costs: Montana Power Company "caps-pulleys" [summary]
1913-1936
20-68 / 5
Analysis of material costs: Montana Power Company; [summary]
1913-1936
20-68 / 1-4
Analysis of material costs: Montana Power Company
1930-1936
20-66 / 3-6
Analysis of material costs: Montana Power Company;
1913-1919
21-50 / Vol. 1
Anti-trust case schedules
1948?
20-08 / 100?
Balance sheet
1912
20-14 / 2
Balance sheet accounts (work sheets)
1936-1941
20-02 / 23
Balance sheet, consolidated
1912-1942
20-02 / 5
Bickley, John H. index of data compiled worksheets
undated
20-13 / 9
Bird, F.W.: material from files
undated
20-55 / 9
Book costs: summary
1936-1940
20-60 / 13
Book costs: percent return, etc.
1913-1942
05-33 / 7-11
Booklet: The Montana Power Company...and Subsidiary Companies. [photos, nice] (5 copies)
1916
20-96 / 3
Broadwater-Missouri Water Users' Association vs. Montana Power Co. exhibits?
1939-1942?
20-32 / 15
Broadwater-Missouri Water Users' Association vs. Montana Power Co. transcript of record, vol. 1
1939-1942?
05-31 / 11
Brochures: ads to the people of Montana
1920
05-31 / 10
Brochures: letter to stockholders
1913
20-17 / 17
Bylaws
1920-1952
21-20 / 5
Callantine case (re right-of-way in Gallatin County)
1950s
21-39 / 5
Catalog: General Electric
1947
21-40 / 22-26
Catalog: General Electric
1947
21-39 / 5
Catalog: General Electric
1947
21-53 / 4
Catalog: Stearns Roger Manufacturing Co.
1947
05-34 / 6
Clark, W.A. properties [originals]
1916-1927
05-31 / 21
Clippings: Borrowed Times re Colstrip 3-4
1970s
Volume
4-5
Cochrane Hydro development payrolls
1957-1958
3
Cochrane Hydro development voucher register
1957-1958
Box/Folder
20-35 / 1-3
Construction drawings used in field inventory #176-178
undated
20-78 / 1-6
Construction drawings used in field inventory #154-159 [FOLDED, POOR CONDITION]
undated
20-52 / 1-8
Construction drawings used in field inventory #160-167 [FOLDED, POOR CONDITION]
undated
20-21 / 1-8
Construction drawings used in field inventory #168-175 [FOLDED, POOR CONDITION]
undated
20-78 / 7
Construction drawings used in field inventory #183 [FOLDED, POOR CONDITION]
undated
20-35 / 4
Construction work in progress #179
1941
20-01 / 1
Correspondence, Kirk, C.H. [photocopies]
1907-1943
21-38 / 2-11
Correspondence, misc. [originals]
1908-1916?
20-03 / 11
Correspondence, misc.
undated
21-25 / 10
Correspondence, MPC Internal Affairs re reclassification
undated
21-38 / 12
Correspondence, Ryan, J.D. [originals]
1909-1913
20-01 / 2
Correspondence, Ryan, J.D. [photocopies]
1908-1912
21-38 / 1
Correspondence, Ryan, J.D. [photocopies]
1911-1922
05-34 / 1-4
Correspondence: Ryan, John D. [originals! badly water damaged]
1902-1922
05-34 / 5
Correspondence: Wetmore, C.W. [originals! badly water damaged]
1907-1915
20-13 / 3
Cost, depreciation
1931
20-13 / 2
Cost reclassification--final
undated
21-2 / 4
Cost reports [?] lots of figures, some correspondence
1932-
20-14 / 7
Cost sheets
1937-1945
20-20 / 1-20?
Cost sheets etc. (includes Billings plant, Deer Lodge Electric Company, Great Falls Townsite Company, Great Falls Water Power and Townsite Company, Havre, Madison River, etc. etc.) [badly water damaged]
1939-1943?
20-13 / 16
Dams: Campbell, water wheel data [mostly blueprints]
undated
20-10 / 6
Dams information: Big Hole
1900-1910?
20-10 / 7-8
Dams information: Canyon Ferry
undated
20-10 / 9
Dams information: Flint Creek
undated
20-10 / 10
Dams information: Hauser
undated
20-10 / 11
Dams information: Hebgen
undated
20-10 / 12
Dams information: Holter
undated
20-10 / 13
Dams information: Livingston
undated
20-10 / 14
Dams information: Madison
undated
20-10 / 15
Dams information: Mystic Lake
undated
20-10 / 16-17
Dams information: Rainbow
undated
20-48 / 41
Depreciation
1918-1941
20-60 / 2
Depreciation requirements, annual, original cost basis
1943
20-35 / 5
Distribution plant accounting
1936-1941
20-35 / 6
Distribution plant elements of cost analysis
1936
20-16 / 3
District Court Docket #62591 Petition of MPC
1977
20-96 / 4-7
Drawings of transmission lines: Anaconda to Billings
n.d.
20-13 / 10
Early foreseen uses for electric power: published material
undated
20-09 / 9
Electric Plant accounts
undated
20-60 / 11
Employee material
1926-1946
21-24 / 5-6
Engineering check of cost analysis (Black Eagle, Canyon Ferry, Madison #2, Morony, Rainbow, Volta) 2 copies: includes general statement of each plant
1936?
21-23 / 6
Engineering check of cost analysis (Flint Creek, Hauser, Hebgen,Holter, Mystic Lake, Milltown, Thompson Falls) [includes general statement of each plant]
1936?
21-24 / 7
Engineering check of cost analysis (Flint Creek, Hauser, Hebgen,Holter, Mystic Lake, Milltown, Thompson Falls) [includes general statement of each plant]
1936?
20-45 / 14
Expenditure and improvement requisitions index
1913-1939
21-26 / 5
Flathead Hydro-Electric Development [cost reports]
1938
20-26 / 18
Flathead Hydro-Electric Development, Polson, analysis of operations
1930-1933
21-26 / 4
Flathead Hydro-Electric Development [summary of accounts]
1930-1938
05-33 / 6
Fort Peck Dam clippings and booklet
undated
20-36 / 8-9
FPC: Classification methods and procedures (2 copies, apparently not identical, includes lots of actual financial figures, not just methods)
undated
20-57 / 1-4
FPC: Project 5 Montana Flathead: Analysis of construction accounts, pp 1-1492; 1-2724 [3 vol., 2 copies of last]
1930-1933, 1936-1938
20-60 / 5-6
FPC: record of staff work [2 copies]
1941-1942
20-60 / 7
FPC: testimony by William A. Paton
1944
20-48 / 30-31
FPC docket IT-5825
1944
21-25 / 1-2, 6-7
FPC docket IT-5825: briefs of FPC [2 printed copies] [and PSC 2421] [important]
1944-1945?
20-15 / 1
FPC docket IT-5825: depositions of C.F. Kelley and W.D. Thornton
1943
20-48 / 23
FPC docket IT-5825: exhibits #1-420 index
1910s-1940s
20-24 / 14-54?
FPC docket IT-5825: exhibits #2-43 (reproduction of historic documents)--often multiple copies
undated
20-32 / 1-14
FPC docket IT-5825: exhibits #1-145 (includes lots of valuable historic documents re the original cost of MPC properties, which may be available elsewhere but are pulled together here)
1910s-1940s
20-48 / 1-22
FPC docket IT-5825: exhibits #146-420 (includes lots of valuable historic documents re the original cost of MPC properties, which may available elsewhere but are pulled together here)
1910s-1940s
20-64 / 2-11
FPC docket IT-5825: exhibits #1-420 [mostly photocopies]
1944
20-80 / 1
FPC docket IT-5825: exhibits index [is joint FPC and PSC case]
undated
21-25 / 3
FPC docket IT-5825: exhibits list and description [and PSC 2421]
1944-1945?
21-25 / 16-17
FPC docket IT-5825: exhibits list (handwritten) [and PSC 2421]
1944-1945?
05-31 / 6-7
FPC docket IT-5825: exhibits on history of early power development and formation of MPC
undated
20-16 / 4
FPC Docket IT-5825: In the matter of the Montana Power Company
1944
20-23 / 1-...
FPC Docket IT-5825: In the matter of the Montana Power Company
1944
20-19 / 1-12
FPC Docket IT-5825: In the matter of the Montana Power Company briefs and reply briefs (4 copies each)
1944
20-07 / 4-...
FPC Docket IT-5825: In the matter of the Montana Power Company [various files]
1944
20-48 / 29
FPC docket IT-5825: index
1944
20-48 / 24
FPC docket IT-5825: opinion 120-A
1945
21-25 / 5
FPC docket IT-5825: opinion and order of FPC [and PSC 2421]
1945
21-25 / 13-15
FPC docket IT-5825: petition for rehearing (3 copies; 1 printed) [and PSC 2421] [important]
1945
20-15 / 2-20
FPC docket IT-5825: preparation of case and possible witnesses etc. (includes testimony, documents, etc.)
1943?
20-48 / 25-26
FPC docket IT-5825: [procedural manuals]
undated
20-49 / 37=39
FPC docket IT-5825: reports
undated
20-48 / 28
FPC docket IT-5825: testimony
1944
20-67 / 1-20
FPC docket IT-5825: testimony Vol. 1-20 [PSC 3421] [2 copies of vol. 15, 17]
1944
20-64 / 1
FPC docket IT-5825: testimony index [is also PSC 3421]
1944
20-34 / 1-...
FPC docket IT-5825: transcript and briefs (some mold)
1944
21-31 / 15
FPC docket IT-5840: Missouri River license case: index to exhibits
undated
20-02 / 6-13
FPC Reevaluation files #1, 24-36 financial material
1920s-1940s
20-01 / 3-24
FPC Reevaluation files #2-20 [financial and tax material]
RESTRICTED
1920s-1940s
20-48 / 27
FPC report revision re reclassification of account 100.6
undated
21-25 / 3
FPC Uniform System of Accounts
1937
20-13 / 6
General Electric Company
1939
20-16 / 5-6
Government agencies: FPC vs PSC differences
1963-1981
20-16 / 1-2?
Government agencies: FPC vs FERC historic financial statements
1977?
20-47 / 70-93
Group 03: Madison River Power Company (includes historical files, minutes, lists of incorporators, accounts, acquisitions, predecessors, etc.)
undated
20-08 / 1-33
Group 04: includes lists of officers and directors, property andplant accounts, reconciliation by Hagenah, report on "Missouri and Madison Rivers in MOntana", customer data, hydraulic vs. steam production statistics, financial stuff, United Missouri River Power Company data, Helena Water and Electric Power Company data, Helena Power Transmission Company data, Capital City Power Company data
1904-1912
20-56 / 1-99?
Group 05: Montana Power Company, includes miscellaneous material
1912-1941
20-08 / 34-99?
Group 05: Montana Power Company, includes miscellaneous material [duplicate?]
1912-1941
20-06 / 2-81
Group 06: Great Falls Power Company files on all the facilities and branches of the company, including historical data, operating reports, substations, Sun River line, steel tower transmission line, Cascade Branch, Benton Electric Light Company, Chinook Choteau, Dodson, Glasgow, Harlem, Hinsdale, Malta, Saco, Stockett, Valier, etc. etc. etc. (includes copies of correspondence, reports, etc.)
1910-
20-06 / 82-92
Group 07: Thompson Falls Power Company, includes historical data, lists of stockholders, officers, plant additions, return per KWH, lands, Northwest Development Company
1912-1928
20-06 / 83-87
Group 08: Deer Lodge Electric Company, includes historical data, correspondence, lists of officers & stockholders, annual report, report by Cochrane
1920s
20-06 / 88-95
Group 09: Missoula Public Service Company, includes list of officers and stockholders, retirement account, data on Missoula Light and Water Company, earnings, plant additions, plant account, property account, American Power and Light Company investment
undated
20-06 / 96-98
Group 10: Helena Gas and Electric Company, list of directors and officers, minutes excerpts, retirement reservce, property account
1929, n.d.
20-06 / 103-106
Group 11: Missouri Reservoir and Irrigation Company, includes historical data, report on proposed Hebgen Dam, capital stock data, retirement reserve
1909, n.d.
20-06 / 107-109
Group 12: Idaho Transmission Company, includes historical data, data submitted to FPC, retirement reserve
1936, n.d.
20-06 / 115-134
Group 14: Great Falls Water Power and Townsite Company includes financial data, letters, excerpts from minutes, property account, stock exchange, blueprint of tranmission line, audit report, data furnished by FPC, stockholders and directors, dividends, income
1904-
20-13 / 5
Hagenah valuations
1939
20-56 / 1
Hagenah valuations: Madison River Power Company (reconciliation with consolidated balance sheet) (really important?)
1913-1941
20-13 / 7
History, early (notes, etc.)
undated
20-94 / 2
ICC: Chicago, Milwaukee & St. Paul Ry. investigation
1926
20-46 /
Inventories of electrical system?? #001-055
1939
20-29 /
Inventories of electrical system?? #057-106
1939
20-72 /
Inventories of electrical system?? #107-141
1939
20-55 / 7
Job orders index (Billings, Bozeman, Butte, Great Falls, Helena, Lewistown, Livingston, MIssoula)
1912-1940
21-14 / 1
Journal entries #01-1 Organization
undated
21-14 / 2
Journal entries #01-2 Franchises and consents
undated
21-14 / 3
Journal entries #01-3 Misc.
undated
21-14 / 4
Journal entries #02-1 Missoula steam plant
undated
21-12 / 1-2
Journal entries #03-1,3 production plants
undated
21-5 / 1-5
Journal entries #03-2 thru 03-6 production plants
1913-1936?
21-14 / 5
Journal entries #03-3 Plant production Moser
undated
21-16 / 1-7
Journal entries #03-7 thru 3-14 Production plants
1913-1936?
21-15 / 2
Journal entries #03-8 Production plants (Milltown)
1913-1936?
21-15 / 2
Journal entries #03-8 Production plants (Milltown)
1913-1936?
21-3 / 1-10?
Journal entries #04-1 thru 4-29 substations [scattered]
1913-1936?
21-14 / 6
Journal entries #04-27 Rainbow Dam switchyard
undated
21-7 / 1-5
Journal entries #04-6 thru 04-10 substations
1913-1936?
21-3 / 11-50?
Journal entries #05-1 thru 05-37 transmission lines ?
1913-1936?
21-1 / 1-32
Journal entries #05-136 thru 5-167: transmission lines ?
1913-1936?
21-7 / 6-16
Journal entries #05-168 thru 05-178 transmission lines
1913-1936?
21-14 / 7
Journal entries #05-22 Bridger; Red Lodge
undated
21-6 / 1-45?
Journal entries #05-37 thru 05-83 transmission lines ?
1913-1936?
21-7 / 17-43
Journal entries #06-1 thru 06-26 substations
1913-1936?
21-14 / 8
Journal entries #06-120,120 Substations: Missouri River, Butte
undated
21-5 / 6-46?
Journal entries #06-154 thru 06-193 substations
1913-1936?
21-17 / 1-55
Journal entries #06-27 thru 06-82 Substations
1913-1936?
21-11 / 1-50?
Journal entries #06-83 thru 06-153 substations
1913-1936?
21-14 / 9
Journal entries #07-1-140 Wire size...
undated
05-39 / 2
Journal entries #07-1-141 Overhead distribution system office records [good]
1941
21-18 / 1-7
Journal entries #07-1:143-150 division Maps, division
1913-1936?
21-14 / 10
Journal entries #07-1-151 Maps Mountain States Telephone and Telegraph and MPC
undated
05-39 / 1
Journal entries #07-1-160 procedure of summarizing and costing inventory [mostly blank inventory forms: actually it explains what forms were used and field procedure]
1941
21-59 / 1-5
Journal entries #07-3 thru 07-5 Meters, transformers etc.
undated
Volume
7-12
Journal entries #08-1 thru 08-7 overhead distribution system?
undated
13-16
Journal entries #09-1 thru 09-3 distribution system property
undated
Box/Folder
21-59 / 6
Journal entries #09-4 Inventory adjustments
undated
Volume
17-19
Journal entries #10-1 thru 10-5 overhead distribution system final costs
undated
Box/Folder
21-59 / 7
Journal entries #10-2 Distribution system final cost (accounts 356-363)
undated
21-59 / 8-10
Journal entries #11-1 thru 11-3 Distribution
1910s- 1939
21-51 / 1-9
Journal entries #11-21 thru 11-30 Distribution system
1913-1939
21-58 / 1-8
Journal entries #11-4 thru 11-11 Distribution
1910s- 1939
21-28 / 8
Journal entries #12-2 29 Summary Transformer auto current [ important??]
1916-1936
21-28 / 7
Journal entries #12-2-14 thru 12-2-19 Analysis of material costs: MPC [probably important summary]
1920-1929
Volume
20-23
Journal entries #12-3 analysis of material costs summary
undated
24-25
Journal entries #13-1 thru 13-2 distribution system material reshipments
undated
Box/Folder
21-20 / 6
Journal entries #14-11 Plant inventories
undated
21-13 / 2
Journal entries #14-33 Office furniture and equipment
1920s-1930s
21-28 / 1-3
Journal entries #14-8 thru 14-10 Equipment inventories
1940?
21-28 / 4-5
Journal entries #15-3 thru 15-4 Organization charts and progress reports [important?]
1939-1940
21-19 / 3
Journal entries #16;18 study (interest during construction)
undated
21-10 / 1-2
Journal entries #18 cost studies: division recapitulation
undated
21-10 / 3
Journal entries #19 administrative expense working papers
undated
21-10 / 4
Journal entries #20 Electric Plant lease
undated
21-15 / 1
Journal entries #21 Other utility plants (gas, water, steam)
undated
21-10 / 5
Journal entries #22 Other physical property
undated
21-10 / 6
Journal entries #23 leased property, customers' premises
undated
21-10 / 7
Journal entries #24 leased property expenditures
undated
21-10 / 8
Journal entries #25 construction work progress
undated
21-10 / 9-10
Journal entries #26 Distribution of land B-Z
undated
21-20 / 7
Journal entries #26-2 distribution runs
undated
21-10 / 11
Journal entries #27 data pertaining to all structures
undated
21-28 / 6
Journal entries #28 Analysis of pole stubbing distribution, transmission lines
1941
21-9 / 1-13
Journal entries #29-1 thru 29-13 predecessor companies
1892-1912?
21-19 / 4
Journal entries #29-14 Madison River Power
1908
21-13 / 3-11
Journal entries #29-16 thru 29-25 predecessor companies
1892-1937?
21-19 / 5
Journal entries #29-16(9) Gallatin Light...
1908?
21-28 / 7
Journal entries #30-1 Job orders index and explanation [important?]
1918-1939
21-19 / 6
Journal entries #31 accounts 501-1133
1918-1935
21-13 / 12
Journal entries #33 Reproduction cost estimate
undated
21-13 / 13
Journal entries #34 Electric Plant adjustments (co. construction plus admin and gen'l costs)
undated
21-13 / 14
Journal entries #35 Material turnover study
undated
21-19 / 7
Journal entries #36 Installations, consumers' premises
undated
21-13 / 15
Journal entries #38 Statement "A"
undated
21-13 / 16
Journal entries #41 Statement "B"
undated
21-13 / 17
Journal entries #43 Statement "D"
undated
21-13 / 18
Journal entries no# meter and transformer purchases
1936
05-34 / 13
Legal documents: several predecessor companies, etc.
pre 1912
20-70 / 1-7
Legal property material (in big black loose leaf binders, some by Cooper, Stephenson and Hoover; seems to be abstract of title material primarily; some lease material)
undated
20-13 / 17
Letters and instructions (re cost studies)
1939
20-93 /
[loose unsorted material]
undated
20-13 / 15
Madison contracts
1905-1907
20-10 / 1-5
Management practices
1959-1960
20-14 / 6
Maps: transmission lines
undated
21-19 / 1-2
Maps lists (Butte: Homestake Beacon line; Butte vicinity primary circuits)
undated
20-22 / 1-11
Memoranda and opinions #6-17
1940s?
21-31 / 8
Milwaukee Road electrification [file 14]
1923
20-13 / 21
Miscellaneous folded documents (legal documents, appraisals, etc.)
undated
05-31 / 14
Mitchell, Sidney Zollicoffer (obituaries, correspondence etc.
1908-1944
20-13 / 4
Notes, personal
1931
20-49 / 23-34
Operating reports for MPC and subsidiaries: details
1915-1927
20-49 / 1-22
Operating reports for MPC and subsidiaries: summaries
1917-1938
20-55 / 8
Operating revenues and customers by divisions etc.
1941-1958
20-82 / 1
Organization of MPC (brief memo)
undated
20-02 / 3
Organizational charts
undated
20-24 / 1-6
Original cost study (mostly theoretical background, some published)
undated
20-24 / 7
Original cost study (semi-monthly progress reports)
1939-1940
20-41 / 8
Overhead Distribution system inventory, office records, field questions
1940
20-41 / 1-7
Overhead Distribution system, pole miles and circuit miles, summary
1940
20-41 / 1-6
Overhead Distribution system, pole miles and circuit miles, vol. 1-6
1940
20-73 / 2-14
Palmer, Otis--inventory reports on various operations
1936-1938
20-44 / 1-3
Photograph albums (3 vol.) to accompany 1941 valuation [great!]
1941
20-55 / 2
Plant reclassification notes (preliminary report)
undated
20-13 / 1
Plant valuation
undated
20-69 / 40-49
Plant valuation file #002-9 (valuations by different people)
undated
20-13 / 11
Power plant data
undated
05-31 / 4
Power plant data
1942
20-02 / 14-22
Production plants cost study: Canyon Ferry, Hauser, Madison, #1-9
undated
21-53 / 1-5
Property inspection field notes by J.S. Hartt, vol. 3,4,7,8,9
1948
21-53 / 6
Property inspection field notes: meters summaries by J.S. Hartt, vol. 4
1943
21-13 / 19
Property record supplemental sheets, work sheets
1937-1947
20-60 / 4
Property records system
1944
20-04 / 4-13?
PSC docket 080.8.55
1980-1981
20-04 / 1-3?
PSC docket 3421
undated
20-48 / 32
PSC docket 3421
1944
20-16 / 6-9
PSC Docket 80-8-55 rate (includes audits of accounts, $15.7 million case)
1980
20-13 / 13
Rates
undated
21-39 / 6
Recapitulation adjustment corrections detail
1936
20-11 / 1
Reclassification: 3B C.F. Kelley and W.D. Thornton depositions before FPC
1943
20-93 / loose
Reclassification: 3C Sullivan and Cromwell files for FPC negative photostats
undated
20-11 / 2-7
Reclassification: 3C Sullivan and Cromwell files for FPC (photocopies)
1906-1930?
20-11 / 8
Reclassification: 3D C.F. Kelley files for FPC (photocopies)
1909-1913
20-11 / 9-10
Reclassification: 3E Sullivan and Cromwell files for MPC attorneys in 1943 (photocopies)
1910-1912?
20-11 / 11
Reclassification: 3G memo re review of MPC files by FPC attorneys
1944
20-11 / 12
Reclassification: memoranda of requests
1942-1943
20-94 / 3-20?
Reclassification: misc. files [need evaluation]
undated
20-95 / 1-20?
Reclassification: misc. files [includes quite a few legal documents etc.]
undated
20-09 / 11
Reclassification: prints to be used with analysis of underground system
undated
20-82 / 41
Reclassification: review and extension of supporting data (includes progress report, 1941)
1939-1942
20-98 / 20
Reclassification data furnished by Statistical Dept.
1939-1940
20-05 / 28
Reclassification: data on Butte Branch consumption of Madison River Power Company #20.48
1912
20-05 / 18-27
Reclassification: data prepared for F.H. Woy #20-44, files A-J)
1943-1944
21-32 / 10
Reclassification errors distribution
1941
20-61 / 1
Reclassification file #01: opinions and decisions
1941-1944
20-61 / 2
Reclassification file #02: briefs
1941-1944
20-61 / 3-4
Reclassification file #03-4: general memoranda (includes extra copies)
1941-1944
20-61 / 5
Reclassification file #05: opinion of Kelly and Evans re Holter, Hauser, Canyon Ferry... [several copies]
1912
20-63 / 1
Reclassification file #06: fundamental principles to be followed
1939
20-63 / 3
Reclassification file #07: data on electric power plants ... prior to installation...from MPC [only cross reference sheet]
undated
20-63 / 2
Reclassification file #07: FTC hearings
1942
21-13 / 1
Reclassification file #07-1-161 Ownership of rural and sundry lines
1939
20-63 / 3
Reclassification file #08: data on electric power plants ... prior to installation...from MPC [only cross reference sheet]
undated
20-63 / 4
Reclassification file #09: summaries of FPC orders re accounts 100.5 and 100.7
undated
20-63 / 5
Reclassification file #10: memos of request form FPC examiners - replies
1941-1945
20-63 / 6
Reclassification file #11: MPC and predecessors info. [cross reference sheet]
undated
20-63 / 7
Reclassification file #12: "The founding of Great Falls, Montana, and some of its early records", by Paris Gibson [important, library: PAM 2719] [2 copies]
1914
20-63 / 8
Reclassification file #13: Return average rate allowed
1913-1939
20-63 / 9
Reclassification file #14: Report on reclassification and original cost studies of Electric Plant
1937
21-8 / 1
Reclassification file #14-2 general equipment unit costs
1936?
20-63 / 10
Reclassification file #16: Chart showing corporate ownership of all companies [see also 20-02:3]
undated
20-63 / 11
Reclassification file #17: Going Value: allowances by courts and commissions
1940
20-63 / 12
Reclassification file #18: Organization expense
1941
20-63 / 13
Reclassification file #19: Survey of evidence desired in connection with Great Falls properties
1942
20-63 / 14
Reclassification file #20: Outlines of evidence
1940
20-63 / 15
Reclassification file #21: Memo of comments of FPC examiners
n.d.
20-63 / 16
Reclassification file #22: Distribution of reclassification statements
1940
20-63 / 17
Reclassification file #23: Notes and studies of proposed refiling of reclassification statements
n.d.
20-63 / 18
Reclassification file #24: Public utility holding company act of 1935 provisions recognizing jurisdiction of state commissions [several copies]
n.d.
20-63 / 19
Reclassification file #25: Taxation, history of federal income tax
RESTRICTED
1942
20-63 / 20
Reclassification file #26: Preliminary notes on plant reclassification [important]
1936?
20-63 / 21
Reclassification file #27: Invested capital study by J.R. Sullivan and R. Gilpin re excess profits tax
RESTRICTED
1943?
20-63 / 22
Reclassification file #28: correspondence from Hogan ["not court file"]
1910-1925
20-63 / 23
Reclassification file #29: reclassification instructions issued by Ebasco Service Inc. [several copies]
1937
20-63 / 24
Reclassification file #30: Electrical utilities statistics FPC annual report
1941
20-63 / 25
Reclassification file #31: temporary file of ownership charts of various companies etc.
undated
20-63 / 26
Reclassification file #32: "History of Economic Development of Montana," by R.H. Fletcher [several copies]
1942
20-63 / 27
Reclassification file #33: Information re predecessor companies received from S.P. Hogan, J.R. Thomas, and Harold Sterling
undated
20-63 / 28
Reclassification file #34: Integration information [several studies, several copies]
1940-1942
20-63 / 29
Reclassification file #35: capitalization of overhead...
1942
20-63 / 30
Reclassification file #36: PSC petition for order to take depositions
1943
20-63 / 31
Reclassification file #36A: PSC orders etc. [several copies]
1944
20-63 / 32
Reclassification file #36B: FPC orders etc. [several copies]
1944
20-98 / 1
Reclassification file #36C: PSC hearings memos of presentation
1943
20-98 / 2-3
Reclassification file #36D-E: PSC petition of American Power and Light
1944
20-98 / 4
Reclassification file #36F: material re intervention of stockholders
1944
20-98 / 5
Reclassification file #36G: petitions re oral argument
1944
20-98 / 6
Reclassification file #36G: PSC findings, opinion and order
1945
20-98 / 7
Reclassification file #36I: summary of plant after PSC order
1945
20-98 / 8
Reclassification file #36J: Opinion and order FPC
1945
20-98 / 9
Reclassification file #36K: petition for rehearing before FPC
1945
20-98 / 10
Reclassification file #37: American Telephone and Telegraph vs. FCC affidavits
1935
20-98 / 11
Reclassification file #38: Ebasco statements re intangibles
1943
20-98 / 12
Reclassification file #39: United Gas Corp case and Carolina case
1942
20-98 / 13
Reclassification file #40: estimates of earnings etc.
1910-1915
20-98 / 14
Reclassification file #41: Commonwealth and Southern postwar volume
1943
20-98 / 15
Reclassification file #42: Missouri and Madison rights of way
1943
20-98 / 16
Reclassification file #43: chronology of reclassification work [important!!!]
1936-1944
20-98 / 17
Reclassification file #44: early long distance transmission [includes Great Falls to Butte]
1908
20-98 / 18
Reclassification file #45: testimony of various people in out-of-state cases
1944, n.d.
20-98 / 19
Reclassification file #46: factual statement [important] [several copies]
1936
20-05 / 15
Reclassification: historical data (from E.N. Duffy)
undated
20-82 / 43-49
Reclassification: misc. unlabelled folders
undated
21-20 / 2-4
Reclassification of Electric Plant: vol. 5,7,8
1936, 1941
20-13 / 8
Reclassification, plant--notes
undated
20-60 / 8
Reclassification records index (3rd copy)
1937
21-25 / 11
Reclassification records index
undated
21-23 / 7
Reclassification records index
1937
20-55 / 5
Reclassification records index (2 copies)
1937
21-32 / 11
Reclassification retirements
1940-1944
21-39 / 1-4
Reclassification: substations (Anaconda, Rainbow switchyard, Livingston, Canyon Ferry, Wallace, madison, Norris...)
1938-1939
20-05 / 16
Reclassification: working papers
1937
20-05 / 17
Reclassification: working papers (recapitulation)
1945
20-82 / 42
Reclassification: progress reports
1941
21-23 / 4
Reconciliation with FPC staff report [work sheets]
1936
05-31 / 20
Report on the Cost of Capital to Public Utilities, by Byllesby engineering and Management Corp.
1928
20-05 / 1
Reports: Butte Electric and Power Company bonds
1926
20-05 / 11-12
Reports: History of Montana Power Company and Water Power Value, by William J. Hagenah, Vol. 1-2
1943
20-45 / 7
Reports: Madison and Missouri Rivers in Montana (incl. photos etc.)
n.d.
20-45 / 8
Reports: Madison River Power Company; Billings and Eastern Montana Power Company (incl. photos etc.)
n.d.
20-18 / 3
Reports: Madison River Power Company on construction including wonderful photos (also includes Billings and Eastern Montana Power Co.)
n.d.
05-31 / 1
Reports: Missouri River Electric and Power Company; Thompson Falls Power Company (inc. photos etc.)
n.d.
20-45 / 9
Reports: Missouri River Electric and Power Company; Thompson Falls Power Company (incl. photos etc.)
n.d.
05-31 / 2-3
Reports: Montana Power Company (2 vol.: includes photos of dams, substations, etc.) [2 copies of vol. 1] [great!]
1936?
20-43 / 1-3
Reports: Montana Power Company (2 vol.: includes photos of dams, substations, etc.) [2 copies of vol. 2] [great!]
1936?
20-05 / 2
Reports: Montana Power Company, Butte memorandum re taxes, depreciation... [etc.]
RESTRICTED
1923
20-45 / 12
Reports: Montana Power Company evaluation
1941
20-45 / 10-11
Reports: Montana Power Company (incl. photos etc.) (2 vol.)
n.d.
20-45 / 13
Reports: Plant valuation
1936
20-08 / 101?
Reports: Thompson Falls Power Company
n.d.
20-55 / 10
Reports: U.S. Army Corps of Engineers re Columbia River and Tributaries, Appendix O: Power Generation and Transmission
1948
21-23 / 1-2
Reproduction cost estimate
1941
20-24 / 8-13
Reproduction cost new #1-6
1940s
20-55 / 3-4
Requests of quotations from Westinghouse Electric
1941-1943
20-49 / 36
Retirement account
1951-1952
20-13 / 14
Roundup
undated
05-34 / 10-11
Rural Electric cooperatives
1949, 1957-1966
05-33 / 1-5
Scrapbooks (re Glacier Production Company, MPC, power, mines, etc.)
undated
20-94 / 1
SEC: exhibit 4(c)
1953
20-80 / 4
SEC hearing #010.270 Reclassification
1945
20-80 / 5
SEC hearing #010.270 Reclassification [clippings]
1944
20-60 / 3
Securities and Exchange Commission: Schedules in support of direct testimony, by Jay Samuel Hartt
1944
05-34 / 12
Statistical Review, 5th annual
1951
20-92 / 7
Statistical summary, 2nd annual
1948
20-60 / 12
Stockholders, officers, directors, etc. lists
1919-1926
20-36 / 1-7
Substation inventories: Butte Great Falls, Billings, Lewistown, Livingston, Bozeman, Helena, Missoula, Idaho divisions [2 copies each]
1940
20-74 / 13
Telsmith Jaw Crusher instructions
undated
05-34 / 14
Thompson Falls river data (card file)
1928
20-73 / 15-21
Time sheets (several people)
1954-1955
20-79 / 1-8
Time sheets (several people)
1954-1955
Volume
2
Transmission line summary
undated
Box/Folder
20-03 / 17
Transmission lines completed
1915
21-32 / 12
Transmission lines construction index
1940
20-45 / 3
Transmission lines construction index
n.d.
20-55 / 1
Transmission lines data from Division offices
1936
21-23 / 5
Transmission lines inventory
1936
21-12 / 11
Transmission patrolman's inventories
undated
20-09 / 8
Unit costs
1941
Volume
6
Utah Construction Company payrolls
1947-1949
Box/Folder
20-02 / 24
Utility plant
1937
05-41 / 1
Valuation #001a land appraisal by F. Norby
1937
20-76 / 1-7
Valuation #002-08 Structures field notes and summaries (Black Eagle, Canyon Ferry, Dillon, Flint Creek, Hauser, Hebgen, Holter, Kerr, Madison, Milltown, Morony, Mystic Lake, Rainbow, Ryan, Thompson Falls)
1941
20-53 / 1-10
Valuation #009-18 Structures field notes and summaries (Rainbow, Ryan, Thompson Falls, Billings, Bozeman, Butte, Great Falls divisions)
1941
20-27 / 1-9
Valuation #019-27 Structures field notes and summaries (Great Falls, Lewistown, Helena, Livingston, & Missoula divisions)
1941
20-27 / 1-9
Valuation #028-36 Production Equipment field notes and summaries (Black Eagle, Canyon Ferry, Dillon, Hauser, Hebgen, Holter, Kerr, Madison)
1941
20-40 / 1-8
Valuation #037-44 Production Equipment field notes on dams (includes Morony, Mystic Lake, Rainbow, Ryan, Thompson Falls; and misc. equipment)
1941
20-40 / 9-10
Valuation #045-46 Transmission Substations field notes on station equipment (Black Eagle-Volta)
1941
20-42 / 1-3
Valuation #056-58 Distribution Substations field notes, station equipment (Mocassin - Zurich)
1941
20-42 / 4
Valuation #059 Transmission lines inventory and summary
1941
20-42 / 5
Valuation #060 Distribution system inventory and summary
1941
20-42 / 6-8
Valuation #061-63 General Equipment inventory accounts 372-378
1941
20-37 / 1
Valuation #064 General Equipment inventory and summary
1941
20-37 / 2-3
Valuation #065-66 field notes and summaries (all divisions; gas dept.)
1941
20-37 / 4
Valuation #067 Transmission field notes and summaries (Gas Dept.)
1941
20-37 / 5
Valuation #068 Distribution field notes and summaries (Gas Dept.mains, services, meters, regulators)
1941
20-89 / 1
Valuation #069 Gas Dept.
1941
20-89 / 2
Valuation #070 Steam Dept.
1941
20-89 / 3
Valuation #071 Water Dept.
1941
20-89 / 4
Valuation #072 [missing checked out to Harry Freeborn 3/21/90?]
1941
05-41 / 2
Valuation #072 Water Dept. inventory and summary
1937
20-89 / 5
Valuation #073 Structures Glacier Production Co.
1941
20-89 / 6
Valuation #074 Oil and Gas wells, field lines, Glacier Production Co.
1941
20-89 / 7
Valuation #075 Absorption Plant: Glacier Production Co.
1941
20-88 / 1
Valuation #076 Refinery inventory and work sheets Glacier Production co.
1941
20-88 / 2
Valuation #077 Structures & equipment inventory and summary Great Falls Townsite company
1941
20-88 / 3
Valuation #078 Labor rates all divisions
1941
20-88 / 5-6
Valuation #079 Cost analysis, Kerr, Morony Thompson Falls
1941
20-88 / 4
Valuation #079 Great Falls Townsite Company lots, lands etc.
1941
20-87 / 1-2
Valuation #082-83 Cost analysis: Kerr Plant
1941
20-87 / 3
Valuation #084 Construction Plant and equipment
1941
20-87 / 4-6
Valuation #085-87 Unit costs, structures
1941
20-86 / 1
Valuation #088 Unit costs, structures (Lewistown, Livingston, Missoula)
1941
20-86 / 2-4
Valuation #089-91 Electrical Dept.
1941
20-86 / 5
Valuation #092 Piping: labor, performance and cost
1941
20-86 / 6
Valuation #093 Transmission distribution and communication equipment, labor performance and cost
1941
Volume
26-29
Valuation #094-097 unit costs structures
1941
30-34
Valuation #098-101 unit costs substations
1941
35
Valuation #102 unit costs production plants
1941
36-38
Valuation #104-106 unit costs piping
1941
39
Valuation #107 unit costs transmission and distribution
1941
40
Valuation #108 unit costs steam and water
1941
41-42
Valuation #109-110 unit costs general equipment
1941
43
Valuation #111 unit costs gas and oil
1941
Box/Folder
05-41 / 3-5
Valuation #112-114 Manuscript structures (acct. 321, 322, 326, 342, 351, 371)
1937
05-41 / 6
Valuation #115 Manuscript structures (gas, steam, water etc.)
1937
21-44 / 5
Valuation #116 Structures, Great Falls
1941
05-41 / 9-19
Valuation #117-118 Manuscript production plant plants (accounts 232, 324, 325)
1937
21-44 / 6
Valuation #119 Transmission substation account
1941
21-44 / 7
Valuation #120 Distribution substation account
1941
20-39 / 1-8
Valuation #121-128 Manuscript (includes distribution substations, transmission plant, distribution plant, general plant, equipment) #127 checked out 1985
1941
20-39 / 1-4
Valuation #124 Manuscript, transmission plant
1941
05-37 / 1
Valuation #129 Manuscript, Gas transmission and distribution
1941
05-37 / 2
Valuation #130 Manuscript, equipment all acounts
1941
05-37 / 3
Valuation #131 all depts, all divisions, specific and undistributed costs
1941
Volume
45
Valuation #132 special undistributed construction and general costs
1941
Box/Folder
05-37 / 4-6
Valuation #133-135 depreciation studies by J.S. Hartt's organization
1941
05-37 / 7
Valuation #136 pole treatment studies [actually is list of poles]
1941
Volume
44
Valuation #137 cost analysis, transmission and distribution
1941
Box/Folder
20-81 / 1-6
Valuation #138-143 Quotations, companies 1-167 and index [re purchasing items from various companies]
1941
05-39 / 3-18
Valuation #142-158 blank inventory books
1941
20-85 / 1-6
Valuation #144-150a Quotations, companies 1-167 and index [re purchasing items from various companies]
1941
20-96 / 1
Valuation #180 Land appraisal by F. Norby
1941
20-96 / 2
Valuation #182 employee time sheets and travel expense
1943-1944
20-48 / 42
Valuation: method of arriving at cost of Butte Electric and Power Company
undated
21-2 / 1-3
Valuation of the Montana Power Company and Constituent and Affiliated Companies: vol. 1-3 by William J. Hagenah [important: seems to be complete list of assets at time of consolidation] [duplicate]
1913
21-27 / 1-6
Valuation of the Montana Power Company and Constituent and Affiliated Companies: vol. 1-3 by William J. Hagenah [important: seems to be complete list of assets at time of consolidation] [original 1913, and 1939 copy]
1913, 1939
21-54 / 1-3
Valuation of the Montana Power Company and Constituent and Affiliated Companies: vol. 1-3 by William J. Hagenah [important: seems to be complete list of assets at time of consolidation] [original 1913, and 1939 copy] [duplicate]
1913, 1939
20-99 / 5-7
Valuation of the Montana Power Company and Constituent and Affiliated Companies: vol. 1-3 by William J. Hagenah [important: seems to be complete list of assets at time of consolidation]
1913
20-54 / 1-5
Valuation: Reproduction costs, vol. 1-5
1941
20-77 / 1-2
Valuation: Reproduction costs, vol. 6-7
1941
21-24 / 1
Volta Power Station, Inventory and reclassification of plant equipment
1939
20-12 / 8
Water Powers: Anaconda Copper Co study of steam costs
1908-1913
20-12 / 15
Water Powers: Cochrane re value of Thompson Falls land in 1913
1940
20-12 / 29
Water Powers: Cochrane study of power site values
1941
20-12 / 1
Water Powers: comparative hydro and steam costs, testimony of Cliff Woodward [notes only]
1942
20-33 / 1
Water Powers: compilation of literature re valuation
1941
20-12 / 23
Water Powers: computations KWH output and value of sites
1940
20-12 / 14
Water Powers: Conference re value of water power
1942
20-33 / 7
Water Powers: Cooper & Powelson report [mold]
undated
20-12 / 26
Water Powers: Corette remarks on valuations
undated
20-12 / 6
Water Powers: cost of power sites of MPC
undated
20-33 / 2
Water Powers: discussion of value of water rights...by John C. Stevens
undated
20-12 / 10
Water Powers: Elliott comparison with steam
undated
20-12 / 3
Water Powers: estimate of value and amount paid for Madison and Missouri River power sites
undated
20-33 / 6
Water Powers: estimate of value of power sites (1 dup; mold)
undated
20-33 / 8
Water Powers: estimates of earnings, power requirements... [mold]
undated
20-12 / 2
Water Powers: general information
undated
20-12 / 20
Water Powers: Great Falls Power Company value of lands etc.
1910
20-12 / 24-24a
Water Powers: Hagenah tentative valuation and studies
1913
20-12 / 17
Water Powers: Hebgen memo re state control of water power
1913
20-12 / 30
Water Powers: Ketter report on development, cost and valuation of water powers [includes valuations for each site]
n.d.
20-12 / 11
Water Powers: Larned comparison of water power with steam
1941
20-12 / 22
Water Powers: list of references
undated
20-12 / 12
Water Powers: McElroy comparison of water power with steam
1940
20-12 / 7
Water Powers: Milwaukee Road trustees report re cost of electric and steam operation
1936
20-12 / 27
Water Powers: power plant land values
1913
20-12 / 28
Water Powers: power plant site values
1913
20-12 / 25
Water Powers: Pratt, A.C. temtimony on value for IRS
1923
20-12 / 5
Water Powers: president asks FPC to review power rates for war production firms [clipping]
1942
20-12 / 13
Water Powers: Salzman [label missing]
undated
20-12 / 21
Water Powers: Senate Doc. 274 Hearings on development and control of water power
1911
20-12 / 9
Water Powers: Sid Barber study re water power rights
undated
20-12 / 19
Water Powers: Site C value and cost
undated
20-12 / 18
Water Powers: valuation, based on court decisions and regulatory commissions
undated
20-33 / 3
Water Powers: valuation by J.S. Hartt
1943
20-33 / 4
Water Powers: valuation correspondence; annual depreciation
1943
20-33 / 5
Water Powers: valuation of water power by the comparative steam cost method [vol. 1, dup water damaged; mold]
undated
20-12 / 4
Water Powers: value of power sites, including water rights
1942
20-12 / 16
Water Powers: Wisconsin Commission valuation
1916
20-13 / 12
Water rights
undated
20-05 / 13
Water Utility: Missoula Water system improvements
1929-1937
20-05 / 14
Water Utility: Mosby-Fairview case
1966-1967
20-02 / 25
Water utility plant
1936-1942
20-19 / 15-16
Weekly progress reports
1939-1940
20-98 / 20
Witnesses and evidence file #01
1942
21-52 / 1-4
Work orders analysis
1942
20-03 / 18-?
ZZZ [lots of miscellaneous financial files, unevaluated]
undated

Allendale Irrigation Company Return to Top

Container(s) Description Dates
Box/Folder
20-93 / 2
Allendale Irrigation Company vs. State Water Conservation Board and Flint Creek Water Users Association
1942

Beaverhead Transmission Company Return to Top

Container(s) Description Dates
Box/Folder
20-49 / 35
Accounts etc.
1940
20-09 / 6
Dillon inventory of structures and improvements
1937
20-09 / 7
Dillon line transformers, electric meters and instrument transformers
1937-
20-09 / 1
Report: Beaverhead Transmission Company, Electric Plant in Service
1940

Billings and Eastern Montana Power Company Return to Top

Container(s) Description Dates
Box/Folder
20-65 / 6
Analysis of material costs: Billings and Eastern Montana Power Company [2 vol.]
1908-1912
20-50 / 2
Financial statements
1911-1912
20-47 / 2-14
Group 01: Billings and Eastern Montana Power Company (includes historical files, minutes, lists of incorporators, accounts, acquisitions, predecessors, etc.)
undated
05-31 / 8
Minutes (directors & stockholders)
1912

Butte And Superior Mining Company Return to Top

Container(s) Description Dates
Box/Folder
20-45 / 1
Reports: Butte and Superior Mining Company mining equipment and supplies
n.d.

Butte Division Return to Top

Container(s) Description Dates
Box/Folder
20-14 / 4-5
Maps
undated

Butte Electric And Power Company Return to Top

Container(s) Description Dates
Box/Folder
20-65 / 4-5
Analysis of material costs: Butte Electric and Power Company ] [2 vol.]
1907-1912
20-50 / 1
Butte Electric and Power Company Financial statements
1911-1912
20-93 / 1
Butte Electric and Power Company financial statements
1911-1912
20-50 / 5
Butte Electric and Power Company Financial statements [photocopies to FPC]
1908-1912
05-34 / 9
Butte Electric and Power Company reports, correspondence, statistics, etc. [originals]
1901-1912?
20-47 / 15-69
Group 02: Butte Electric and Power Company (includes historical files, minutes, lists of incorporators, accounts, acquisitions, predecessors, etc.)
undated
20-45 / 2
Reports: Butte Electric and Power Company (incl. photos)
n.d.
20-18 / 4
Reports: Butte Electric and Power Company on construction including wonderful photos
n.d.
20-48 / 43
Reports: Butte Electric and Power Company to General Electric Company
1901
20-02 / 2
Steam power and water earnings and hydro maintenance
undated
05-31 / 12
Temporary file on acquisitions by company
1905-1911

Butte Lighting And Power Company Return to Top

Container(s) Description Dates
Box/Folder
20-48 / 44
Reports: Butte Lighting and Power Company to General Electric Company
1901

Butte Power Company Return to Top

Container(s) Description Dates
Box/Folder
05-31 / 5
Memorandum...on Water Powers of Montana, by Max Hebgen
1911

Carolina Power And Light Company Return to Top

Container(s) Description Dates
Box/Folder
20-19 / 14
Reclassification of Electric Plant: Statements "A" to "I" Inclusive (includes history of electrical power generation etc etc. EXCELLENT [2 copies]
1937

Clark Montana Realty Company Return to Top

Container(s) Description Dates
Box/Folder
20-82 / 2
Clark Montana Realty Company agreement between American Power and Light Co. re Missoula Public Service Co.
1928

Electric Plant Return to Top

Container(s) Description Dates
Box/Folder
21-44 / 1-4
Account 343-363 distribution plant costs, substations
1936
221-8 / 3-9
Account classification (6 big books in pencil)
1940-1943?
20-09 / 9
Accounts
undated
20-59 / 1-7?
Accounts
1936, n.d.
20-14 / 1
Accounts (summarizes all plants)
1930s?
21-24 / 2-4
Accounts, details filed under reclassification costs [summary] 3 copies
n.d.
20-18 / 2
Classification of costs: distribution plant [copy 3-4]
1936-1949
20-43 / 6
Classification of costs: distribution plant [pencil copy]
1941
20-07 / 2
Classification of costs: general plant
1936-1949
20-07 / 3
Classification of costs: production plant
1936-1949
20-18 / 1
Classification of costs: transmission plant [copy 3-4]
1936-1949
20-07 / 1
Classification of costs: transmission plant [copy 4]
1936-1949
21-31 / 9
File 15 subsidiary companies: taxes, balance sheets historical documents etc.
RESTRICTED
1912-1923?
20-80 / 6
Reclassification of Electric Plant (original cost details)
1937; 1945
20-38 / 1-6
Reclassification of Electric Plant: vol. 1-6
1937
20-62 / 1-7
Reclassification of Electric Plant: vol. 1-6 [2 copies of vol. 1]
1937
20-97 / 1-6
Reclassification of Electric Plant: vol. 1-6
1937
21-30 / 1-6
Reclassification of Electric Plant: vol. 1-6
1937
05-43 / 1-6
Reclassification of Electric Plant: vol. 1-6
1937
20-99 / 1-4
Reclassification of Electric Plant: vol. 3-6
1937
20-80 / 2
Reclassification of Electric Plant: vol. 6
1937
20-47 / 1
Reclassification of Electric Plant: Statements "A" to "I" Inclusive (includes history of electrical power generation etc etc. EXCELLENT [1 copy]
1940
20-48 / 40
Reclassification of Electric Plant: Statements "A" to "I" Inclusive (includes history of electrical power generation etc etc. EXCELLENT [1 copy]
1940
20-60 / 1
Reclassification of Electric Plant: Statements "A" to "I" Inclusive (includes history of electrical power generation etc etc. EXCELLENT [2 copies]
1940
21-25 / 8-9
Reclassification of Electric Plant: Statements "A" to "I" Inclusive (includes history of electrical power generation etc etc. EXCELLENT [2 copies]
1940
20-15 / 21
Reclassification of Electric Plant: Statements "A" to "I" Inclusive (includes history of electrical power generation etc etc. EXCELLENT [3 copies]
1940
20-71 / 1
Reclassification of Electric Plant: Statements "A" to "I" Inclusive (includes history of electrical power generation etc etc. EXCELLENT [about 20 copies: appear to be 2 or more versions, check!]
1940
20-94 / 3
Reclassification of Electric Plant: Statements "B", "E", "F", "G", "G"
1937
20-07 / 25?
Reclassification of Electric Plant: Statements "B", "E", "F", "G", "G" [2 copies]
1937
05-39 / 19-22
Reclassification of Electric Plant: vol. 104 ["copy 20"]
1941
05-40 / 41?
Reclassification of Electric Plant: working papers
1937
20-14 / 3
Sub-station transformers inventory
1942
20-02 / 1
Taxes accrued
RESTRICTED
1913-1943

Glacier Production Company Return to Top

Container(s) Description Dates
Box/Folder
20-17 / 12
Glacier Production Company: Analysis of plant investment, R.M. Boykin, EBASCO
1936
20-02 / 4
Glacier Production Company: Analysis of retirement
1913-1943
20-17 / 1-9
Glacier Production Company: Depreciation summary: plants and equipment
1931-1944
20-09 / 2
Glacier Production Company: Freight settlement statements
1939
20-03 / 6
Glacier Production Company: Land lease
undated
05-40 / 21-40?
Glacier Production Company miscellaneous files
1930s
20-17 / 13-15
Glacier Production Company: Reports to PSC
1955
20-17 / 11
Glacier Production Company: SEC material and working papers
1944
20-17 / 10
Glacier Production Company: Tax cost of properties
RESTRICTED
1944

Great Falls Power Company Return to Top

Container(s) Description Dates
Box/Folder
20-65 / 4
Analysis of material costs: Great Falls Power Company
1910-1917
20-17 / 16
Articles of incorporation
1910
20-03 / 5
Capital earnings
1901-1920
20-03 / 3
Capital stock (how MPC acquired)
undated
21-31 / 14
File 41a Great Falls Power Company photographs
1927
20-50 / 4
Financial statements
1911-1912
20-03 / 12
MPC, Great Falls Power Company, and Thompson Falls Power
1915
20-45 / 4
Reports: Great Falls Power Company (incl. photos etc.) (2 copies)
n.d.
20-45 / 5
Reports: Great Falls Power Company (Power Development) by Max Hebgen
1910
20-03 / 4
Subsidiaries: earnings
1908

Great Falls Townsite Company Return to Top

Container(s) Description Dates
Box/Folder
20-03 / 7-8
Appraisal
1941, n.d.
20-06 / 135-137
Group 15: includes lists of directors and officers, reconciliation, trial balance
1912-1915
20-03 / 9
Investment loss
undated

Great Falls Water Power And Townsite Company Return to Top

Container(s) Description Dates
Box/Folder
05-31 / 18-19
Agreements with Boston and Great Falls Electric Light and Power Company; and with Royal Milling Company
1891-1892
21-31 / 1-7
File 01-03 Great Falls Power Company; Great Falls Water Power and Townsite Company; MPC [historical documents]
1900s-...
21-31 / 11
File 22a Great Falls Water Power and Townsite Company (historical documents, etc.)
undated
21-31 / 12
File 24 Great Falls Water Power and Townsite Company (historical documents, etc.)
undated
21-31 / 12
File 26 Great Falls Water Power and Townsite Company (historical documents, etc.)
undated
21-31 / 13
File 41 Great Falls Water Power and Townsite Company (historical documents)
undated
20-06 / 1
Report (includes photos, diagrams, etc.--good)
1934?
20-45 / 6
Reports: Great Falls Water Power and Townsite Company (incl. photos etc.) (2 copies)
n.d.

Great Falls Water Power Company Return to Top

Container(s) Description Dates
Box/Folder
20-03 / 10
Loans, intercompany
undated

Havre Electric Company Return to Top

Container(s) Description Dates
Box/Folder
20-13 / 18-19
Acquisition file
1903-1914

Helena Electric Railway Co. Return to Top

Container(s) Description Dates
Box/Folder
05-30 / 1
Correspondence and requisitions [letterpress book: originals, only a few pages used, water damaged]
1892

Helena Gas And Electric Company Return to Top

Container(s) Description Dates
Box/Folder
20-65 / 3
Analysis of material costs: Helena Gas and Electric Company
1927-1929
20-82 / 3-4
Helena Gas and Electric Company reorganization and story of acquisition
1928

Helena Gas Light And Coke Company Return to Top

Container(s) Description Dates
Box/Folder
05-30 / 2-3
Correspondence [letterpress books: originals! precedes volume in MC 268]
1885-1891

Helena Power Tranmission Company Return to Top

Container(s) Description Dates
Box/Folder
05-30 / 4
Correspondence [letterbox: originals!]
1907

Holter Development Return to Top

Container(s) Description Dates
Box/Folder
21-31 / 10
File 22 Holter Development (historical documents etc.)
undated

Kerr Dam Return to Top

Container(s) Description Dates
Box/Folder
20-26 / 1-2
Kerr Dam: accounting requirements and procedures
1951
20-25 / 23-25
Kerr Dam: construction reports, daily
1953-1954
20-25 / 1-22
Kerr Dam: invoices
1953-1954
20-30 / 6-27
Kerr Dam invoices
1953
20-26 / 17
Kerr Dam progress reports
1952-1955
20-83 / 1-2
Kerr Dam unit #3: cancelled payroll checks
1952-1955
20-84 /
Kerr Dam unit #3: payroll & travel vouchers [unfoldered]
1952-1955
21-12 / 9
Kerr Dam Unit 2 cost estimate
undated
21-12 / 10
Kerr Dam Unit 3 work progress
1954-1955
21-26 / 1-2
Kerr Dam Unit 3 work progress
1951-1953
21-23 / 8
Kerr Development: accounting system
1948?
21-26 / 3
Kerr Hydro Plant recapitulation of expenditures by account
1939-1940
20-79 / 9
Kerr Project: inventory cards
undated
20-79 / 10
Kerr Project: invoices
1953
21-26 / 6
Kerr Unit 3???? order book
1956-1958

Madison River Power Company Return to Top

Container(s) Description Dates
Box/Folder
05-31 / 15
Agreement with Benepe-Berglund [moldy]
1910
20-65 / 2
Analysis of material costs: Madison River Power Company
1905-1912
05-34 / 7
Butte Electric Railway company and Columbia Gardens
undated
20-13 / 15
Contracts
1905-1907
20-50 / 3
Financial statements
1911-1912
20-82 / 5-6
Madison River Power Company acquisition
undated
20-05 / 28
Reclassification: data on Butte Branch consumption of Madison River Power Company #20.48
1912

Missoula Light And Water Company Return to Top

Container(s) Description Dates
Box/Folder
20-09 / 12
Street Railway Dept. valuation ("Snell report")
1923

Missoula Public Service Company Return to Top

Container(s) Description Dates
Box/Folder
20-66 / 1
Analysis of material costs: Missoula Public Service Company; Missoula Light and Water Company
1917-1929
20-65 / 1
Analysis of material costs: Missoula Public Service Company; Missoula Light and Water Company
1917-1929

Missouri River Electric And Power Company Return to Top

Container(s) Description Dates
Box/Folder
20-08 / 101?
Reports: Missouri River Electric and Power Company
n.d.

Missouri River Power Company Return to Top

Container(s) Description Dates
Box/Folder
05-31 / 16
Agreement with Colusa-Parrot Mining and Smelting Company
1906
20-66 / 2
Analysis of material costs: Missouri River Power Company
1900-1908

Montana Dakota Utilities Return to Top

Container(s) Description Dates
Box/Folder
21-20 / 8-9
Montana Dakota Utilities Sheridan Division data, maps etc.
1940s- 1950s

Montana Power Gas Company Return to Top

Container(s) Description Dates
Box/Folder
20-06 / 110-114
Group 13: includes data re acquisition by MPC, summary of plant investment, retirement reserve, Glacier Production Company
1932-1936, n.d.

Phoenix Engineering Company Return to Top

Container(s) Description Dates
Box/Folder
20-74 / 18-39
Flathead Hydro-Electric Development: concrete reports, soil testing reports, humidity and absorption, lab drawings, pumpcrete, cost estimates, tracings, etc. etc.
1938
20-74 / 40-44
Flathead Hydro-Electric Development: invoices
1937
20-74 / 14-15
Flathead Hydro-Electric Development: FPC monthly reports
1936-1938
20-74 / 16-17
Flathead Hydro-Electric Development: weekly progress reports to MPC
1936-1938

Phoenix Utility Company Return to Top

Container(s) Description Dates
Box/Folder
20-26 / 14-16
Account classification
1931-1932
21-12 / 3
Flathead audited vouchers
1931-1933
21-12 / 4
Flathead construction cost
1931-1933?
20-74 / 1-12
Flathead Hydro-Electric Development purchase orders
1930-1936
21-12 / 6
Flathead operating journal
1930-1933?
21-12 / 7
Flathead operating summary cash
1930-1933?
20-26 / 9
Flathead operation monthly reports
1930-1931
21-12 / 5
Flathead trial balance
1931-1933?
21-12 / 8
Flathead voucher register
1930-1932
20-26 / 10-13
Kerr Dam construction equipment record
1930-1931
20-30 / 28-?
Kerr Dam invoices
1936
05-40 / 1-20?
Phoenix Utility Company miscellaneous files
1930s
21-20 / 1
Project 2188 Holter plant
1940s- 1950s
20-31 / 1-3
Project 2188 Missouri-Madison plants various analyses (includes summaries of claimed and book costs, etc.)
1940s-1950s
21-21 /
Project 2188 plants (Holter, Hauser, etc.) working papers etc.
1940s- 1950s
21-21 /
Project 2188 plants (Holter, Hauser, etc.) working papers etc.
1940s- 1950s
21-15 / 3-8
Project 2188 Rainbow and Ryan various analyses (includes summaries of claimed and book costs, etc.)
1940s-1950s
21-15 / 9
Project 2543 Milltown original cost working papers etc
1940s-1950s
20-26 / 3-8
Trial balances
1931-1932

Plains Electric Water Properties Return to Top

Container(s) Description Dates
Box/Folder
20-03 / 2
Acquisition (FPC S81)
undated
20-09 / 10
Plains inventory
undated

Thompson Falls Power Development Return to Top

Container(s) Description Dates
Box/Folder
20-03 / 1
Hydraulic construction accounts
undated
20-03 / 12
MPC, Great Falls Power Company, and Thompson Falls Power
1915

Union Electric Company Return to Top

Container(s) Description Dates
Box/Folder
20-09 / 5
Analysis of material costs
1941
20-03 / 14
Beaverhead transmission service
undated
20-09 / 3-4
Depreciation study
1941
20-03 / 16
Hydro S82
undated
20-03 / 13
Lovell Hydroelectric palnt
undated
20-03 / 15
Plant in service
1939

Union Oil Company Return to Top

Container(s) Description Dates
Box/Folder
20-05 / 3-10
Audits
1945-1949, 1954-1955

Utah Construction Company Return to Top

Container(s) Description Dates
Box/Folder
20-30 / 1-5
Payroll distribution [no names]
1947-1949

Washington Water Power Company Return to Top

Container(s) Description Dates
Box/Folder
20-19 / 13
Reclassification of Electric Plant: Statements "A" to "I" Inclusive (includes history of electrical power generation etc etc. EXCELLENT [2 copies]
1937

Names and SubjectsReturn to Top

Subject Terms

  • Dams--Montana.
  • Electric power--Montana.
  • Hydroelectric power plants--Montana.
  • Public utilities--Montana.