- Hawkins, Geo. T.2
- Hennepin, Louis, active 17th century2
- Heutmaker, J.F.2
- Hoempler, Carlos E. C2
- Homann Erben (Firm)2
- Howell, Reading, 1743-18272
- Ikola, R.J.2
- Illinois. Railroad and Warehouse Commission2
- India. Surveyor General2
- Iowa State College. Department of Civil Engineering2
- Iowa. Highway Commission2
- Isaacs, Patricia2
- Istituto geografico De Agostini2
- J. Pigot & Co.2
- Jerde, E.A.2
- Johnson & Browning2
- Julius Bien & Co.2
- Justus Perthes (Firm : Gotha, Germany)2
- Kenyon Company2
- Kne, Len2