- Geological Survey (U.S.), cartographer, issuing body1
- Goodman, C. R.1
- Gray, A. B. (Andrew Belcher), 1820-18621
- Groesbeck, Jno. D. (John D.)1
- Groves, H.1
- Guaranty Title Company, cartographer1
- Gulf, Colorado, and Santa Fe Railroad1
- Gulfboard Oil Corp1
- H.M. Gousha Company, author1
- Haass, H. V.1
- Hannah, Manton1
- Hart, Juan S.1
- Hayes, Philip Thayer, 1923-1
- Heydrick Mapping Company1
- Higgins, Pattillo, 1863-19551
- Highway Map Co., creator1
- Hull, Kelly & Thayer, cartographer1
- Hunter, Ralph Eugene1
- Hurd & Whitaker1
- J.H. Colton & Co., cartographer1
GeoBlacklight version 4.1.0
