Collection
- Institute for Social Research (University of Michigan) records, 1936-2017 (scattered) (majority within 1946-2010)925
- Carl Cohen papers, 1950-2012875
- Henry Hitt Crane Papers, 1902-1977 (majority within 1938-1964)839
- John D. Dingell, Jr. papers, 1922-2017 (majority within 1955-2014)836
- Angela Morgan Papers, 1861-1957834
- Programs for Educational Opportunity (University of Michigan) records, 1969-2002 (majority within 1970-1986)821
- University of Michigan assorted publications, circa 1920-2016 (majority within circa 1970 - 1990)810
- Post Family Papers, 1882-1973775
- American Review records, 1967-1977774
- Clarence T. Johnston papers, 1888-1941771
- Republican Party (Mich.) State Central Committee Records, 1958-1979 (majority within 1962-1978)771
- Tecumseh Community Health Study records, 1940-1986 (majority within 1960-1977)771
- William Haber Papers, 1918-1988766
- School for Environment and Sustainability (University of Michigan) records, 1903 - 2012761
- University of Michigan Faculty and Staff Portraits, circa 1860-1960760
- Postcard Collection, 1890s-[ongoing]757
- Penrod/Hiawatha Company postcard collection, 1950s-2017752
- Jens Jensen drawings and papers, 1903-1951 (majority within 1910-1934)744
- James G. O'Hara papers, 1958-1987 (majority within 1958-1976)739
- University Musical Society (University of Michigan) records, 1879-2017739