"[On 2 Sheets] Geologic Map of New Mexico", U.S. Geological Survey (USGS)
Subject: New Mexico
Period: 1928 (dated)
Color: Printed Color
46.6 x 25.9 inches
118.4 x 65.8 cm
This massive lithograph was printed on two sheets and boldly presents the geology of the state. Compiled by N.H. Darton, the map brilliantly illustrates 22 different geological groups through a combination of color and texture. The underlying base map provides additional information on Indian reservations, military reservations, national forests, railroads, and more.
Issued folding on a clean sheet with vivid color. There is just one separation at a fold intersection of the southern sheet and a hint of toning, otherwise fine. There is a "C.S. Hammond & Co." stamp in the bottom right corner of the southern sheet.