Collection
- Finvola Drury papers, 1928-201971
- Ari J. Kane Papers, 1976-201670
- Citizens Committee for Constitutional Liberties Records, 1960-197465
- Children's Movie Posters Collection, 1953-198753
- Human Rights Party Papers, October 1948 - May 1997 (majority within 1977-1986)47
- Ella Reeve Bloor Papers, 1912-192246
- Greg Calvert Papers, 1920-2000 (majority within 1960-1992)46
- Ann Arbor Tenants Union Records, 1956-1995 (majority within 1969-1991)44
- Ethel Smyth Papers, 1910-1962 (majority within 1917-1942)43
- Stan Nadel Papers, 1964-1987 (majority within 1964-1969)42
- Thomas C. Trueblood papers, date range for the collection of letters42
- Jacques Girard Papers, 1975-199941
- Isaac E. Ronch Papers, 1902-2020 (majority within 1940-1971)39
- Phil Cushway Papers, 1970-197839
- Martin Sostre Collection, 1923-2013 (majority within 1967-1976)38
- Stephen D. Cox Papers, 1944-2010 (majority within 1986-2003)33
- Barbara Murphy Papers, 1963-199927
- Fraye Arbeter Shtime (Freie Arbeiter Stimme) Papers, 1922-194025
- Cara Hoffman Papers, 1986-202124
- Ellen Murray Chamberlain Collection of Children's Authors, 1972-197323