United States. Army. Corps of Engineers. (cartographer)1940Relief shown by contours and spot heights.Tactical Map.Base map U.S. Geological Survey Engraving, 1893.Partial revision 1940.utlmaps:6d8ff761-d1e2-47a8-b317-0554a1c3e474not applicable[Washington, D.C. ?] : Corps of Engineers, 1940.http://rightsstatements.org/vocab/NoC-US/1.0/Texas Historical Topographic Maps44 x 38 cm.Brewster County (Tex.) -- Maps.Presidio County (Tex.) -- Maps.Texas -- Maps.Texas Alpine quadrangle : grid zone \B\ Corps of Engineers, U.S. Army.mapscartographicTopographic maps