- Richard A. Rutyna Papers, 1763/20111
- Richard G. Joynt Collection of British Manuscripts, 1593/20151
- Richard J. DeMartino papers, 1910/19651
- Richard Lee Morton papers, 1756/2006, bulk 1930/19691
- Robb-Bernard Papers, 1665/1980, bulk 1850/19502
- Robert Hunt Land Papers, 1938/19423
- Robert S. Pace Collection
1669-19931
- Roy Bird Cook (1886-1961), Collector, Papers, 1679/1984, bulk 1840/19603
- Royal Court of Guernsey Contracts, 1675/17061
- Saint Andrew's Society collection, 1861/19952
- Samuel H. Yonge papers, 1890/19351
- Sheet Music Collection, 1827/19742
- Shenandoah County Historical Society Collection, 1147/20001
- Short Papers, 1675/17891
- Stanford Family Legal Papers, 1639/17201