- Parkersburg Town Council Journals, 1826/18741
- Patrick Ward Gainer (1904-1981), Collector, Papers and Folk Music Recordings, 1890/19811
- Patteson-Carone Collection, 1948/19801
- Peter Godwin Van Winkle (1808-1872) Letter, 18421
- Peter Godwin Van Winkle (1808-1872) Papers, 1827/19021
- Peter Godwin Van Winkle (1808-1872), Letter and Receipt for Stock, 1854/18551
- Peterson Family Papers, 1858/19131
- Phyllis Temple Stealey Williams Scrapbooks, 1925/19621
- Pittenger Family Letters, 1841/18751
- Pocahontas Operators Association Records, 1941/19731
- Political Campaigns and Elections Material, 1860/20061
- President Benjamin Harrison (1833-1901), Typescript Copies of Letters to Senator Stephen B. Elkins, 1886/19001
- Preston County Miscellaneous Papers, Political Papers, and Other Material, 1842/18711
- Preston Family Papers, 1817/19451