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Reports of explorations and surveysto ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific OceanBook出版 1855
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Report of an examination of the upper Columbia River and the territory in its vicinity in September and October 1881to determine its navigability and adaptability to steamboat transportationBook
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Report of a reconnaissance from Carroll Montana Territoryon the upper Missouri to the Yellowstone national park and return made in the summer of 1875Book出版 1876