Institution
- Spartanburg County Public Libraries80
- University of South Carolina. Irvin Department of Rare Books and Special Collections79
- Lander University70
- Waring Historical Library (MUSC)70
- South Carolina State Parks64
- University of South Carolina. Government Information and Maps Department63
- The Charleston Museum58
- University of South Carolina. South Carolina Political Collections.49
- National Park Service Southeast Regional Office47
- The Charleston Museum Archives42
- South Carolina Historical Society40
- Greenville County Library System 39
- Middleton Place Foundation39
- The Charleston Archive at CCPL37
- Coastal Carolina University35
- Spartanburg County Public Libraries 35
- Coastal Carolina University, Horry County Archives Center34
- Georgetown County Library31
- Bob Campbell Geology Museum28
- Historic Charleston Foundation23