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1874 A geological map of the Blac … Exploration Book A geological map of the Blac … |
1874 Map of a reconnaissance of t … Exploration Book Map of a reconnaissance of t … |
1874 Map of the Black Hills from … Exploration Book Map of the Black Hills from … |
1876 Judith Basin : drawn under t … Exploration Book Judith Basin : drawn under t … |
1876 Upper Geyser Basin : drawn u … Exploration Book Upper Geyser Basin : drawn u … |
1875 Map of a Reconnaissance From … Exploration Book Map of a Reconnaissance From … |