Collection
- Frank Murphy papers, 1908-19491
- G. Donald Kennedy Papers, 1928-19681
- G. Mennen Williams and Nancy Quirk Williams oral history project, 1980-19821
- G. Mennen Williams papers, 1883-1988 (majority within 1958-1980)1
- George Murphy papers, 1911-19611
- George W. Baber Papers, 1942-19701
- Grand Hotel (Mackinac Island, Mich.) records, circa 1855-2017 (majority within 1946-2012)1
- Harlan Henthorne Hatcher Papers, 1837-1998 (majority within 1891-1986)1
- Harriett Phillips papers, 1952-19781
- Helen W. Berthelot papers, 1948-19961
- Henry Moore Bates papers, 1886-19501
- Howard Cyrus Lawrence Papers, 1916-19661
- James K. Pollock papers, 1920-19681
- James Karoub Papers, 1962-19941
- James Maxwell Mudge papers, 1951-19701
- John B. Bruff papers, 19661
- John B. Swainson Papers, 1943-1975 (majority within 1960-1962)1
- John Butlin Martin papers, 1948-19651
- John Panchuk papers, 1913-19811
- Kathryn C. Nye papers, 1952-19671