- Papers of Mary Johnston1
- Papers of the Low Moor Iron Company
1873-19271
- Papers of the Preston and Related Radford Families,
1744-18953
- Papers of the Randolph Family of Edgehill, 1732/18603
- Patricia Turner Ritchie collection on Brocks Gap, 1750/19901
- Paul G. Caplan Papers, 1890/20041
- Paul Stevens map collection, 1541/17781
- Peacock Bigger Estate Papers,, 1751/17542
- Penny C. Morrill Collection (MS104), 1970/19801
- Performing arts manuscripts collection, 1475/19844
- Perkins & Perkins Law Firm Records, 1751/19202
- Perrin Family Bibles, 1751/1838, bulk 1751/18382
- Peter family papers, 1722/193234
- Powell Family papers, 1775/19291
- Preston Family (Alice Preston Moore Collection) Papers, 1749/18823