| Verfasser | Häufigkeit |
| Grosvenor, Melville Bell 1901-1982 |
18 |
| Darley, James M. |
9 |
| National Geographic Society Cartographic Division |
8 |
| Grosvenor, Mary B. |
6 |
| Smolin, Lori A. |
6 |
| Chamberlin, Wellman 1908-1976 |
3 |
| Bartelot, Richard Grosvenor |
1 |
| Broadley, Alexander Meyrick 1847-1916 |
1 |
| Bumstead, Newman |
1 |
| National Geographic Society |
1 |