Author
- Library55
- Chemistry Division53
- Forestry Bureau53
- Forestry Division52
- Road Inquiry Office50
- Chemistry Bureau44
- Entomology, Bureau of44
- Statistics, Bureau of42
- Animal Industry, Bureau of37
- Forest Service37
- Soils Division36
- Public Road Inquiries Office31
- Pomology Division29
- Biological Survey, Division of24
- Experiment Stations, Office of23
- Porto Rico Agricultural Experiment Station17
- Entomology, Division of15
- Foreign Markets, Division of14
- Hawaii Agricultural Experiment Station14
- Fiber Investigations Office12