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Explorations and Surveys for a Rail Road Route from the Mississippi River to the Pacific Ocean; War Department; Route near the 35th parallel : Map no. 2, from the Rio Grande to the Pacific Ocean; from explorations and surveys made under the direction of t

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Explorations and Surveys for a Rail Road Route from the Mississippi River to the Pacific Ocean; War Department; Route near the 35th parallel : Map no. 2, from the Rio Grande to the Pacific Ocean; from explorations and surveys made under the direction of t