Collection
- O. H. Wienges World War II Collection67
- Oconee County Library: Historic Documents10
- Oliver Hart papers, 1741-196154
- On Campus Newsletter155
- On Campus, Faculty and Staff Newsletter15
- One Man's Dream - William Plumer Jacobs and Clinton, South Carolina73
- Online Exhibits at South Carolina Political Collections128
- Oral Histories12
- Oral Histories 2
- Oral Histories from Richland Library49
- Pacolet Yearbooks28
- Pamphlets from the Irvin Dept. of Rare Books and Special Collections3
- Panoramic Photographs Collection99
- Papers of Samuel Bloom108
- Papers of the Cox and Chesnut Families, 1792-1858212
- Parish Records18
- Paul Cross Papers, 1768-180361
- Paul Hamilton Papers22
- Pawleys Island Civic Association436
- Pearlstine-Strauss Family Papers130