Collection
- Angela Morgan Papers, 1861-195735
- Detroit News records, 1856-1991 (majority within 1912-1982)34
- Pierson Family papers, 1821-199634
- Athletic Department (University of Michigan) records, 1860-201733
- Michigan Woman's Christian Temperance Union records, 1874-200633
- Alumni Association (University of Michigan) records, 1845-200132
- Captain William C. Bacon Michigan Car Ferries Collection, 1883, 2010, and undated32
- LeRoy Barnett Collection, 1880-2022, and undated32
- Arnold Transit Company records, 1854-1987 (majority within 1900-1970)29
- Ardis Press Records, 1811-2002 (majority within 1970-1989)28
- Leonard Bernard Willeke papers, 1900-1984 (majority within 1906-1958)28
- Ann Arbor Public Schools Records, 1833-201127
- Church of Jesus Christ (Strangite) Collection, 1843-1982, and undated27
- Postum Company records, 1895-193127
- Fargo Engineering Company records, 1897-1951 (majority within 1910-1930)25
- Gardner Stewart Williams Papers, 1900-194525
- C.S. Bliss and Company Business Records and Family Papers, 1879-1935, and undated24
- First Baptist Church (Ann Arbor, Mich.) records, 1837-199124
- First Presbyterian Church (Blissfield, Mich.) records, 1845-197724
- Harry Alverson Franck Papers, 1899-1986 (majority within 1910-1945)24