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Author/Creator
- United States. Congress. House129
- Smithsonian Institution. Board of Regents59
- United States. Department of Agriculture52
- United States. Department of Agriculture. Division of Entomology20
- United States. Department of Agriculture. Bureau of Animal Industry18
- United States. Department of Agriculture. Division of Botany18
- United States. Department of Agriculture. Division of Chemistry18
- United States. Department of Agriculture. Division of Statistics17
- Smithsonian Institution15
- United States. Department of Agriculture. Division of Forestry15
- Abbot, C.G., (Charles Greeley)14
- United States. Department of Agriculture. Division of Gardens and Grounds14
- United States. Department of Agriculture. Division of Pomology14
- United States. Geological Survey14
- United States. Office of Experiment Stations14
- Howard, L.O., (Leland Ossian)13
- United States. Department of Agriculture. Seed Division13
- United States. Department of the Interior13
- Fewkes, Jesse Walter11
- Mason, Otis Tufton11