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 Subject (Topic): Geology--United States--Maps 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.