%0 E-Resource %0 Map %0 Print %E United States. War Department. General Staff %E United States. War Dept. General Staff %E United States. Army Map Service %I Engineer Reproduction Plant %D 1933 %C Fort Humphreys, D.C. %G English %B Its Map %B [U.S. Army Map Service. A.M.S. %T Mexico air navigation map. %U http://www.lib.uchicago.edu/e/collections/maps/indexes/G4410-s500-U5-index.jpg