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Progress map of the U.S. Geographical Surveys west of the 100th meridian : to accompany the annual report of 1st Lieut. M.M. Macomb.

Description: Map shows areas under survey, historical routes of exploration with names and dates for the portion of the United States west of the Mississippi River; major cities, existing and abandoned military posts, Native American reservations, and railroads; telegraph lines and locations of astronomical stations. Includes "explanations," "approximate areas," and notes. Relief shown by spot heights. Scale [ca. 1:6,000,000].
Date: 1882
Creator: Geographical Surveys West of the 100th Meridian (U.S.)
Partner: University of Texas at Arlington Library

Progress map of lines and areas of explorations and surveys conducted under the auspices of the War Department: giving the area of the public domain lying west of the 100th. meridian of longitude, with an index illustration of a series of atlas maps / prepared under the direction of Geo. M. Wheeler, Corps of Engineers.

Description: Map shows the names of military explorers, dates, and historical routes of their exploration from the Mississippi River to the Pacific Ocean. Displays railroads, "military posts," Indian agencies, existing and proposed astronomical stations, existing and proposed telegraph lines, state boundaries, major cities, public lands, Indian Territory, Dakota Territory, and area statistics "West of 100th Meridian" in square miles. Includes legend and index. Relief not shown. Scale [1:6,000,000].
Date: 1873?
Creator: United States. Army. Corps of Engineers.
Partner: University of Texas at Arlington Library