United States. Army. Corps of Engineers. (cartographer)1919Relief shown by contours and spot heights.utlmaps:d62c0460-0f88-4eb8-9ea6-941e7591d92dnot applicable[Washington, D.C.?] : Corps of Engineers, [1919]http://rightsstatements.org/vocab/NoC-US/1.0/Texas Historical Topographic Maps45 x 39 cm.Texas -- Maps.Harris County (Tex.) -- Maps.Final sheet 535 N--I--E 2 [Addicks, Texas] Corps of Engineers, U.S. Army.mapscartographicTopographic maps