Collections : [University of Michigan Bentley Historical Library]

Michigan State Police officer, 1923-1941, Michigan Civil Defense Director during World War II, State Police Commissioner, 1947-1951, Republican candidate for governor, 1954, served on Michigan Liquor Commissioner and as Detroit Recorders Court judge. Papers include extensive documentation of his service as Director of Civil Defense and State Police Commissioner and his political activities.

The Donald S. Leonard collection is a valuable resource to researchers studying topics of law enforcement and civil defense and Michigan state politics and government. The Donald S. Leonard collection has been arranged into seven series: Personal and Correspondence, 1925-1966; Civil Defense; World War II Era, 1941-1946; Michigan State Police, 1929-1952; Detroit Police Department, 1952-1954; Political Files, 1950-1956; Organization and Activities Files; Audio-Visual Materials; Committee on Equal Educational Opportunities. Leonard also taught law course at the State Police Recruit School and Metropolitan Police Academy of Michigan.

Saginaw, Michigan, lumberman and businessman, and Michigan State Tax Commissioner, 1912 and wildlife conservationist and sportsman. Papers include extensive correspondence files, business records and photographs.

The William Mershon collection consists of correspondence dealing with Mershon's various activities as a lumberman, Saginaw businessman, and member of the State Tax Commission in 1912. Subjects included in the papers are Michigan wildlife conservation, the Michigan Sportsmen Association, the Michigan Manufacturers Association, the Michigan State Tax Commission, Michigan politics, the Democratic party, personal business investments, lumbering and mining interest, and personal affairs.

The collection also includes diaries, a book of notes on hunting and fishing trips, and various business records such as cash books, time books, ledgers, and journals. These primarily concern his investments and lumbering business. Many of the business records are available on microfilm. The collection also includes photographs.