John C. Sloss papers, 1880-1916 (bulk dates)
Table of Contents
Overview of the Collection
- Creator
- Sloss, John Calvin, 1840-1917 (mine developer)
- Title
- John C. Sloss papers
- Dates
- 1880-1916 (bulk dates) (bulk)18801916
- Quantity
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1.1 linear feet (4 boxes)
1 oversize folder - Collection Number
- MC 438
- Summary
- The John C. Sloss papers (1880-1916) consist of mine reports, field notebooks on numberous mines in Montana and elsewhere in the North American continent, financial statements from Montana banks, and correspondence, particularly with mine invenstors.
- Repository
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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
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Collection is open for research
- Languages
- English
Biographical Note
John Calvin Sloss was born in April 1840 in Harrison County Ohio. Although originally trained as a teacher, he came to Montana around 1870 to work in the mines. Early on he established some claims in the Bryant Mining District, the Elkhorn Lode and the True Fissure. After he had established himself in the mining field, he began to branch out in the development of other mines. It is believed he may have helped develop the Elkhorn Skyline Mine. He became an expert, most likely in hydraulic mining. Serving as a consultant for investors, he visited mines to write reports to assist investors in their financial decisions . He built a strong relationship with two investors in particular, Achille F. Migeon (an industrialist from Connecticut) and Philip N. Moore (a mining engineer later based in St. Louis). He appeared to have been pretty well known in the mining business, in Montana and the west in general. He eventually moved with his family to the Capital Hill district in Seattle, Washington where he passed away in 1917.
In 1882 John Sloss married Isabel Shott. They has three children: Martha E. Sloss, Isabel Sloss, and John Cameron Sloss Jr. Years following John Sr.'s death, John Jr. sold and gave family members stock in the company involved in developing the above mentioned Elkhorn Skyline Mine.
Content Description
John C. Sloss papers (1890-1910 bulk dates) consist of correspondence, financial documents, production records, legal documents, field notebooks, journals and diaries, publications, maps, and miscellaneous.
Use of the Collection
Restrictions on Use
The Montana Historical Society is the owner of the materials in the Research Library and makes available reproductions for research, publication, and other uses. Written permission must be obtained from the Research Library before any reproduction use. The Society does not necessarily hold copyright to all of the materials in the collections. In some cases, permission for use may require seeking additional authorization from the copyright owners.
Preferred Citation
(Item description and date). Name of Collection. Collection Number. (box and folder number). Montana Historical Society Research Center. Archives. Helena, Montana.
Administrative Information
Arrangement
The arrangement for the collection, though arranged mostly by series (correspondence, employment records, financial, legal documents, publications, miscellaneous, and journals), is not necessarily chronologically. Collection is not in a fully processed state. The collection also includes and oversized folder which is housed in the Archives map case.
Detailed Description of the Collection
The following section contains a detailed listing of the materials in the collection
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Correspondence
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Description: General CorrespondenceDates: circa 1880-1916Container: Box 1, Folder 1
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Description: General CorrespondenceDates: circa 1880-1916Container: Box 1, Folder 2
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Description: H.G. BixbyDates: 1896-1897Container: Box 1, Folder 3
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Description: W.S. KendallDates: circa 1902-1903Container: Box 1, Folder 4
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Description: Charles GriffithDates: 1890Container: Box 1, Folder 5
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Description: A.F. MigeonDates: 1890-1894 (bulk dates)Container: Box 1, Folder 6
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Description: P.N. MooreDates: 1896-1916Container: Box 1, Folder 7-8
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Description: P.N. MooreDates: 1896-1916Container: Box 2, Folder 1-2
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Description: W.Z. StuartDates: 1904Container: Box 2, Folder 3
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Employee Records
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Description: Time bookDates: 1906Container: Box 2, Folder 4
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Financial
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Description: BankingDates: circa 1887-1902Container: Box 2, Folder 5
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Description: Mining ReceiptsDates: 1893Container: Box 2, Folder 6
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Description: TaxesDates: 1886-1906Container: Box 2, Folder 7
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Description: BankingDates: 1889-1909Container: Box 3, Folder 1
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Description: Invoices and receiptsDates: circa 1903-1921Container: Box 3, Folder 2-3
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Description: Certificates of Assays/Assay ReportsDates: 1905, 1915Container: Box 3, Folder 4
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Description: Stock CertificatesDates: 1933-1957Container: Box 3, Folder 5
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Legal Documents
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Description: Bill of SalesDates: 1893Container: Box 3, Folder 6
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Description: Options to PurchaseDates: 1905, 1914Container: Box 3, Folder 7
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Description: Mine AgreementsDates: circa 1891-1908Container: Box 3, Folder 8
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Description: Description of MinesDates: circa 1890-1915Container: Box 3, Folder 9
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Publications
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Description: Humboldt County Brokers WeeklyDates: 1915Container: Box 3, Folder 10
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Miscellaneous
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Description: Miscellaneous mining notes and clippingsDates: undatedContainer: Box 3, Folder 11
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Journals
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Description: Field NotebooksDates: 1887-1916, undatedContainer: Box 4, Folder 1-2
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Description: Daily JournalsDates: 1902-1914Container: Box 4, Folder 3
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Financial
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Description: Account LedgersDates: 1885-1915Container: Box 4, Folder 4
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Biographical
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Description: Biographical information on John C. SlossDates: undatedContainer: Box 4, Folder 5
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Oversize
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Description: Oversize MapsDates: undatedContainer: Oversize Folder 1
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Names and SubjectsReturn to Top
Subject Terms
- Hydraulic mining
- Mining claims
Personal Names
- Sloss, John Calvin, 1840-1917 (mine developer)
Geographical Names
- Bryant Mining District
Occupations
- Business consultants
Other Creators
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Personal Names
- Lee, David (donor)
