California, (Nevada Co.), Nevada City special map.

Shows mines, placer diggings, watercourses and buildings. Relief shown by contours. Contour interval 20 feet. "A.H. Thompson, Geographer; E.M. Douglas, Topographer in charge; Topography by A.F. Dunnington; surveyed in 1891." Text and legend on verso.

1901

Washington, D.C. : U.S. Geological Survey

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