1. Reconnoissance map of the United States showing the distribution of the geologic system so far as Creator: McGee, W. J., 1853-1912 Published / Created: [1893?] Call Number: 75CA 1893 Container / Volume: BRBL_00408 Image Count: 10 Resource Type: Maps, Atlases & Globes Found in: Beinecke Rare Book and Manuscript Library > Reconnoissance map of the United States showing the distribution of the geologic system so far as known / compiled from data in possession of the U.S. Geological Survey by W.J. McGee, 1893.
2. Map of the United States exhibiting the present status of knowledge relating to the areal Creator: McGee, W. J., 1853-1912 Published / Created: 1884 Call Number: 75CA 1884 Container / Volume: BRBL_00407A Image Count: 1 Resource Type: Maps, Atlases & Globes Found in: Beinecke Rare Book and Manuscript Library > Map of the United States exhibiting the present status of knowledge relating to the areal distribution of geologic groups : (preliminary compilation) / compiled by W.J. McGee.