- National Geophysical and Solar-Terrestrial Data Center19
- Johnson, Samuel Y.15
- National Atlas of the United States14
- Arrowsmith, John, 1790-187310
- Finlayson, David P.10
- EROS Data Center9
- Radefeld, Carl Christian Franz, 1788-18749
- Society for the Diffusion of Useful Knowledge (Great Britain)9
- Jefferys, Thomas8
- Conrad, Jamie E.7
- Kitchin, Thomas6
- Ritchie, Andrew C.6
- Clarke, W. B.5
- GeoX Kft.5
- Gotthard, A.5
- United States. National Oceanic and Atmospheric Administration5
- Bartholomew, J. G. (John George), 1860-19204
- Cary, John, ca. 1754-18354
- Faden, William, 1749-18364
- Fire and Resource Assessment Program (Calif.)4
