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.
Leonard H. McMahan (1866-1957) was a newspaper founder and editor, lawyer, and was active in Oregon political parties. The collection contains correspondence, speeches, legal papers, Public Service Commission papers, State Corporation Commission papers, and Travel Expense Claims of the Attorney General's Office.
Robert W. Ruhl (1880-1967) was the publisher and editor of the Medford Mail Tribune. The collection contains personal and professional correspondence and source material on the Oregon system of higher education.