1879. United States. Army. Office of the Chief of Engineers. Shows railroads.; Relief shown by hachures. 80 x 72 centimeters Scale approximately 1:1,520,640 not 1:1,500,000 General Map Collection. U.S. Army? (Washington, D.C.?).
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1879. United States. General Land Office. Relief shown by hachures.; "J.A. Williamson, Commissioner." 58 x 73 centimeters Scale approximately 1:140,480 General Map Collection. General Land Office (Washington).