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1876 Map of Exploration and Surve … Exploration Book Map of Exploration and Surve … |
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 … |