The papers of Leo M. Jackson are divided into three series, Military Service, Personal, and Photographs.
Military Service (1911-1946) constitutes the bulk of the collection. The World War I sub-series includes Jackson's personnel records, background information about the 32nd Infantry Regiment and the 119th Machine Gun Battalion, orders and memoranda of the American Expeditionary Force, 1918 to 1919, including general orders, field orders, and intelligence memoranda, and battalion commendations and rosters. The Wisconsin National Guard sub-series includes training materials and inspection reports by Jackson and others, and includes a letter commending the quality of Jackson's inspections by Gen. Paul Clemens of the Wisconsin National Guard, and a blueprint of the officer's mess at Camp Williams, Wisconsin. Oversized military training materials include a chart and a protractor used in determining distance traveled while marching.
Personal (1956-1963) includes two post cards from military comrades and Photographs (1907-circa1960s) includes a 1907 photograph of Co. A of the 3rd Wisconsin National Guard Infantry with Jackson indicated, 1936 and 1939 photographs of Jackson in his Wisconsin National Guard officer's uniform, and a circa1960s photograph of Jackson in civilian clothing with two military comrades.
