Collection
- Kennedy family papers, 1860s-19821
- Lantern Slides and Glass Plate Negatives Collection, ca. 1890s-1910s1
- Letty M. Wickliffe papers, circa 1860-1992 (majority within 1960s-1976)1
- Lucy E. Chapin papers, 1834-19101
- Marcus Jamieson collection, 1876-1902 (majority within 1876-1884, 1891-1898)1
- Michigan collection, 1759-19591
- Morgan Family Papers, 1821-18931
- Mortimer E. Cooley Papers, 1873-19441
- Muehlig Funeral Chapel records, 1846-1867, 1882-1995 (majority within 1882-1916)1
- Mullett Family papers, 1665-1924 (majority within 1825-1924)1
- Pattengill Family papers, 1767-19631
- Pittsfield Township records, 1830-19801
- Pond Family Papers, 1841-19391
- Postcard Collection, 1890s-[ongoing]1
- Richard D. T. Hollister Papers, 1887-19601
- Richard Nims papers, 1880s-1990s (majority within 1937-1954)1
- Rinsey family papers, 1856-1950 (majority within 1913-1928)1
- Royal Arch Masons, Washtenaw Chapter No. 6 records, 1849-19721
- S. Vern Taylor papers, 1833, circa 1860-19141
- Sarah Caswell Angell papers, 1746-1903 (majority within 1855-1903)1