- Geographical Publishing Co., cartographer, publisher1
- George Engineering Company, cartographer1
- Gibson, Paris, 1830-1920, cartographer, surveyor1
- Griggs, Allan B.1
- Grindhem, M. J. (Martin Johansen), cartographer1
- H.R. Page & Co., author1
- Hadley, Jarvis B. (Jarvis Bardwell), 1909-1
- Harper & MacDonald, cartographer1
- Harper, MacDonald & Co.1
- Harper, MacDonald & Co., surveyor1
- Harper, Macdonald & Co.1
- Harper-MacDonald Company1
- Hassan, A. F.1
- Hearn, B. C. (Bernard Carter), 1933-1
- Hibbard, John H., cartographer1
- Hills, R. C. (Richard Charles), 1848-19231
- Hurdle, R.T.1
- Iddings, Joseph Paxson, 1857-19201
- Ide, Arthur W., cartographer1
- Johnson and Ward1
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