First Across the Continent The Story of the Exploring Expedition of Lewis and Clark in 1804-5-6 by Brooks, Noah, 1830-1903

Subjects: “…United States -- Discovery and exploration…”
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A Canyon Voyage The Narrative of the Second Powell Expedition down the Green-Colorado River from Wyoming, and the Explorations on Land, in the Years 1871 and 1872 by Dellenbaugh, Frederick Samuel, 1853-1935

Subjects: “…United States -- Discovery and exploration…”
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The Exploring Expedition to the Rocky Mountains, Oregon and California To which is Added a Description of the Physical Geography of California, with Recent Notices of the Gold Reg... by Frémont, John Charles, 1813-1890

Subjects: “…United States -- Discovery and exploration…”
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