- Geographia Ltd1
- Geographisches Institut (Weimar, Thuringia, Germany)1
- Geological Survey (U.S.)1
- Georg Westermann Verlag1
- George Philip & Son1
- Guthrie, William, 1708-17701
- Habenicht, Hermann, 1844-1917, cartographer1
- Hall, Sidney1
- Hallwag AG.1
- Hansen, Jules, 1849-1931, cartographer1
- Homann, Johann Baptist, 1663-17241
- Hondius, Hendrik, 1597-16511
- Hondius, Jodocus, 1563-1612, cartographer1
- Istituto italiano d'arti grafiche (Bergamo, Italy), cartographer1
- Jaillot, Alexis Hubert, 1632?-1712, publisher1
- Janvier, Jean, cartographer1
- Jefferys, Thomas, -17711
- John Bartholomew and Son1
- Johnson and Ward1
- Johnson, A. J. (Alvin Jewett), 1827-18841
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