Collection
- John D. Dingell, Jr. papers, 1922-2017 (majority within 1955-2014)1
- John Engler Papers, 1968-20031
- John L. Kavanaugh papers, 1970-2011 (majority within 1990s-2000s)1
- John Lesinski papers, 1930s-1964 (majority within 1950-1964)1
- John W. Jickling papers, 1860-2010 (majority within 1940-2000)1
- John and Leni Sinclair papers, 1957-20031
- Joseph Kumao Sano papers, 1923-1961 (majority within 1941-1951)1
- Joyce Lindeman papers, 1950-1997 (majority within 1955-1986)1
- Julia Makarem papers, 1930-2006 (majority within 1987-2002)1
- Julio Perazza visual materials, 1934-20041
- Knud Lönberg-Holm papers, 1908-1977, undated1
- Laurie Palazzolo Horn Man research materials collection, 1913-2004 (majority within 1940s-1980s)1
- Law School (University of Michigan) records, 1852-20101
- Lawrence Brilliant papers, 1882-2022 (with gaps), undated (majority within 1972-1979)1
- Letters, Documents, & Other Manuscripts, Duane Norman Diedrich collection, 1595-2007 (majority within 1719-1945)1
- Letters, Documents, & Other Manuscripts, E. L. Diedrich Collection, 1789-1987 (majority within 1795-1941)1
- Letters, Documents, & Sermons, Blandina Diedrich collection, 1652-1967 (majority within 1726-1886)1
- Little Traverse Conservancy Records, 1972-2013 (majority within 1984-2003)1
- Lurie Terrace records, 1961-20101
- Marion E. Grusky Rucker collection, 1919-2017 (majority within 1940s-1950s)1