REFINE
Browse All : Atlas Map and Geology by U.S. from 1875
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Note
Lithographed map, sepia toned. Relief shown by hachures and spot heights. Shows hot springs, site of ancient ruins, trail, etc.
Note
Lithographed geologic section in 3 segments, sepia toned. Vertical scale not given. Geologic units: Archean, Carboniferous, Dakota, Colorado, Laramie, Basalt, Traclyte and Conglomerate.
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