"Contour interval 200 feet. Supplemental 100 foot contour in coastal region.""Base compiled by the U.S. Geological Survey, 1927 North American datum Lambert conformal conic projection based on standard parallels 33 degrees and 45 degrees."Includes text, inset of northwest Texas, and 11 insets showing physiography, surface geology, soils, vegetation regions, structural geology, river and coastal basins, major fresh-water aquifers, climate, mineral resources, energy resources, and agricultural products
1 map : col. ; 200 x 252 cm. on 4 sheets 105 x 132 cm. fold. in cover 30 x 34 cm.