Robert Alton was a physician and surgeon in Livingston, Montana, from 1883 until 1922. This collection consists of financial records for his practice including ledgers (1882-1913), daybooks (1902-1910), and a small amount of scattered receipts and correspondence. Also included is a letterpress book of outgoing correspondence (July 15, 1902-June 11, 1903).

Earle Strain was a Great Falls, Montana, physician and one of the discoverers of the cause of Rocky Mountain Spotted Fever. Papers consist of genealogical and biographical information; correspondence (1895-1946) of Strain and his wife Sara; a diary by Sara Wright Strain kept while they were in Europe; household financial records; memorabilia; and clippings.