- MeadWestvaco (Firm)64
- Summerville Research Center (Summerville, S.C.)15
- North Carolina Agricultural Experiment Station10
- Charlottesville Research Center (Ivy, Va.)7
- North Carolina Cooperative Extension Service7
- South Carolina Forest Research Center (Summerville, S.C.)6
- Westvaco Experimental Forest (Georgetown, S.C.)5
- Forest Science Laboratory (Summerville, S.C.)4
- Charlottesville Research Center (Crozet, Va.)3
- North Carolina Agricultural Research Service3
- North Carolina State College Farm3
- North Carolina State University. Department of Biological and Agricultural Engineering3
- Reynolds, Hal3
- Weaver, David S. (David Stathem), 1896-19663
- West Virginia Pulp and Paper Company3
- West Virginia Research Center (Rupert, W. Va.)3
- Beasley, Eustace O. (Eustace Orland)2
- Manteo Research Center (Manteo, N.C.)2
- North Carolina Agricultural Extension Service2
- North Carolina State College2