Henry M. Hanzen (1879-1967) was a newspaper reporter, attorney, and Oregon political manager. The collection (1917-1960) contains a manuscript chronicling the political history of Oregon from 1900-1960, titled "Power," campaign files of Oregon politicians, Oregon State Budget Director correspondence, Press Publishing Co., and Willamette Publishing Co. files, personal correspondence, legal files and scrapbooks.
George Stanley Turnbull (1882 - ?) researched the history of Oregon newspapers, journalism, and governors, and published at least four books on those subjects. The collection (1939) contains a three volume manuscript of the work, "History of Oregon Newspapers," that includes corrections, and printer's edits.