Geological map of the Mother Lode Belt in El Dorado & Amador Counties, California / compiled by Henry Lahiff Civil Engineer U.S. Deputy Mineral Surveyor
Lists names of mines and their locations. "Compiled from Surveys specially plotted for the Mineral Exhibit of the Southern Pacific Railroad Company's Department of the French Exposition, 1900." Explanation at right. Prime meridian: GM. Relief: no. Graphic Scale: Miles. Projection: Plane. Printing Process: Lithography.
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