Collection
- James J. Blanchard Papers, 1982-20021,264
- Office of Research (University of Michigan) records, 1911-2013 (majority within 1950-2010)1,261
- Michigan United Conservation Clubs records, 1937-20041,206
- Marvin Lemmon Niehuss papers, 1923-1972 (majority within 1941-1968)1,198
- Satakunta Region immigrant letters, 1880-19641,192
- Middle English Dictionary Citation Slips, 1860-20011,190
- John B. Swainson Papers, 1943-1975 (majority within 1960-1962)1,172
- Blanchard Family Papers, circa 1835-circa 20001,144
- Susan Wineberg papers, 1900s-2018 (majority within 1977-2003)1,118
- Episcopal Church, Diocese of Western Michigan records, 1851-20111,093
- Sam Sturgis photograph collection, 1860s-1970s1,065
- Martha Wright Griffiths papers, 1956-19761,054
- Michigan Memorial Phoenix Project records, 1947-2003 (majority within 1950-1980)1,042
- Stanford R. Ovshinsky papers, 1922-2012 (majority within 1950-2012)1,031
- Vice President for Development (University of Michigan) records, 1948 - 20041,019
- Engineering Communications & Marketing (University of Michigan) records, 1860-2010 (majority within 1960-2000)1,013
- Board of Regents (University of Michigan) records, 1817-2016 (majority within 1899-2016)998
- Department of Afroamerican and African Studies (University of Michigan) records, 1966-2010 (majority within 1970-1994)978
- Argus-Press records, 1862-2016 (majority within 1960-1990)944
- University of Michigan Photographs Vertical File, 1850s-1980s939