- North Carolina Agricultural Experiment Station10
- North Carolina Cooperative Extension Service4
- 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
- Beasley, Eustace O. (Eustace Orland)2
- North Carolina Agricultural Extension Service2
- North Carolina State College2
- North Carolina State College. Department of Agricultural Engineering2
- North Carolina State University2
- Splinter, William E.2
- American Limestone Company1
- Battle, H. B. (Herbert Bemerton), 1862-19291
- Burns, J. C. (Joseph C.)1
- Capitol Agricultural Service and Supply Co.1
- Collins, E. R. (Emerson Roscoe), 1903-19721
- Corneli Seed Company1
- Covington, H. M.1