- Splinter, William E.17
- North Carolina State University. Department of Biological and Agricultural Engineering13
- Suggs, Charles W.7
- North Carolina State College. Department of Agricultural Engineering6
- North Carolina State University -- Research6
- Johnson, William H.5
- American Society of Agricultural Engineers4
- Campbell, John S.3
- Giles, G. W. (George Wallace), 1910-20033
- Oxford Tobacco Research Station3
- R.J. Reynolds Tobacco Company3
- Carreras Rothmans Ltd.2
- Imperial Tobacco Group2
- Tobacco Science2
- Akehurst, B. C.1
- American Tobacco Company1
- Central Crops Research Station (Clayton, N.C.)1
- Colwell, William E. (William Earle), 1915-1
- Conference Board of the Associated Research Councils1
- Deere & Company1