Prepared under the direction of Corps Area Engineer 9th Corps Area 1913. Horizontal Control by U.S.C. & G.S. and U.S. & Mexico International Boundary Commission. Vertical Control by Corps of Engineers, U.S. Army. Topography by Corps of Engineers, U.S. Army. Polyconic Projection, North American Datum.
Type
image
Format
Scale: 1:125,000. Map type: TF. Polyconic projection Horizontal datum: unknown Grid note: none Vertical datum: mean sea level Contour interval on land and off shore 50 feet. image/tiff topographic maps maps contour maps relief maps quadrangle maps
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