Collection
- Frances M. Fox Papers, 1827-2008, and undated53
- Daughters of the American Revolution of Michigan records, 1893-201450
- Topographic Quadrangle Maps, 1895-199449
- Michigan. Circuit Court (Isabella County) Court records, 1866-1966, and undated48
- Aladdin Company Records Collection, 1907-1989 (majority within 1940-1982)46
- Chase S. Osborn Papers, circa 1870-1949 (majority within 1889-1949)46
- Ellen Van Volkenburg and Maurice Browne papers, 1772-1983 (majority within 1910-1960)46
- Safford and Sunderland Family papers, 1826-1987 (majority within 1890-1940)46
- Varsinais-Suomi Region immigrant letters, 1880-196646
- Michigan State Grange Records, 1873-200545
- William Herbert Hobbs papers, 1880-1955 (majority within 1905-1951)42
- Alexander G. Ruthven Papers, 1901-1961 (majority within 1906-1951)41
- College of Engineering (University of Michigan) records, 1860-201441
- Athletic Department (University of Michigan) records, 1860-201739
- Michigan Historical Records Survey records, 1936-194239
- International Organization of Good Templars records, 1855-197038
- Pierson Family papers, 1821-199636
- Alumni Association (University of Michigan) records, 1845-200134
- Camilla and Ethel Green Family Papers, 1827-1988 (majority within 1910-1955)34
- James and Sybil Irwin family papers, 1815-1987 (majority within 1832-1946)33