Geological and topographical atlas accompanying the report of the Geological Exploration of the Fortieth Parallel made by authority of the honorable Secretary of War under the direction of Brig. and Brvt. Major-General A.A. Humphreys, Chief of Engineers U.S.A.
Library of Congress — Maps

Geological and topographical atlas accompanying the report of the Geological Exploration of the Fortieth Parallel made by authority of the honorable Secretary of War under the direction of Brig. and Brvt. Major-General A.A. Humphreys, Chief of Engineers U.S.A.

king, clarence · 1876

Map
CC0 — Public Domain
Library of Congress — Maps
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