- Geological Survey (U.S.), cartographer, publisher1
- Geological Survey of India1
- Gibbons, Anthony B.1
- Gilman, Richard A.1
- Groenewold, Gerald H.1
- Hack, John T. (John Tilton), 1913-19911
- Hackman, Robert J.1
- Hayes, Philip Thayer, 1923-1
- Heaphy, Charles, 1820-18811
- Helfrich, Charles T.1
- Hoge, Harry P.1
- India. India. National Hydrographic Office1
- Institouton Geōlogikōn & Metalleutikōn Ereunōn (Greece)1
- Institut français du pétrole1
- Instituto Geográfico Nacional (Guatemala)1
- Isachsen, Yngvar W., 1920-1
- Jefferson, Patrick O.1
- Jennings, Charles W. (Charles William), 1927-1
- John Bartholomew and Son1
- Johnson, Stanley Stevens, 1940-1
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