Collection
- Randy Pratt sound recording, 19541
- Rebecca Shelley Papers, 1890-19841
- Republican Party (Mich.) State Central Committee Records, 1958-1979 (majority within 1962-1978)1
- Rob St. Mary papers, 1987-20161
- Robby DeBoer Papers, 1977-2006 (majority within 1991-2006)1
- Robert A. Martin papers, 1963-2007, undated1
- Robert C. Metcalf papers, 1942-2017 (majority within 1950-2008)1
- Robert C. Stempel papers, 1965-20071
- Robert F. Williams papers, 1948-20141
- Robert J. Shepard papers, 1968-19691
- Robert L. Potts papers, 1923-2005 (majority within 1967-2002)1
- Robert P. Ball Papers, 1936-1998 (majority within 1943-1998)1
- Rocking the Boat ...Interviews and research materials, 1930-2001 (majority within 1992-1998)1
- Rollo G. Conlin Papers, 1948-19661
- Rose Parker Kleinman papers, 1947-1977 (majority within 1964-1977)1
- Rowe Family Papers, 1840-1990 (majority within 1840s-1940s)1
- Royal S. Copeland Papers, 1892-19381
- Russell M. Magnaghi collection, 1890s-2009 (majority within 1977-2009)1
- Ruth Bordin papers, 1940-1992 (majority within 1980-1992)1
- Ruth K. Graves papers, 1972-20071