Collection
- Blanchard Family Papers, circa 1835-circa 200057
- Erving Winslow Papers, 1898-192257
- Theodore H. Hubbell papers, 1833-1988 (majority within 1852-1970)55
- Ellen Van Volkenburg and Maurice Browne papers, 1772-1983 (majority within 1910-1960)52
- Walter Drew Papers, 1900-196151
- Michigan. Circuit Court (Isabella County) Court records, 1866-1966, and undated48
- Safford and Sunderland Family papers, 1826-1987 (majority within 1890-1940)48
- Varsinais-Suomi Region immigrant letters, 1880-196648
- Michigan State Grange Records, 1873-200547
- Alexander G. Ruthven Papers, 1901-1961 (majority within 1906-1951)46
- Chase S. Osborn Papers, circa 1870-1949 (majority within 1889-1949)46
- Millard D. Olds Papers, 1855-2000, and undated45
- College of Engineering (University of Michigan) records, 1860-201443
- Martha Cook Building (University of Michigan) records, circa 1913-201641
- John Harvey Kellogg Papers, 1832-1965 (majority within 1874-1943)39
- Camilla and Ethel Green Family Papers, 1827-1988 (majority within 1910-1955)38
- James and Sybil Irwin family papers, 1815-1987 (majority within 1832-1946)37
- Michigan Historical Records Survey records, 1936-194237
- University of Michigan Official Publication, 1900-197137
- International Organization of Good Templars records, 1855-197036