"Geological Map of the United States Compiled by C.H. Hitchcock and W. P. Blake…", Hitchcock, Charles Henry
Subject: United States
Period: 1873 (dated)
Publication: Statistics of Mines and Mining in the States and Territories…
Color: Printed Color
33.5 x 21.5 inches
85.1 x 54.6 cm
This is the second edition of Hitchcock important geological map of the United States. In addition to the geology, the large and colorful map depicts railroads, roads, canals, army arsenals and forts. A table at lower left provides an explanatory key to the colors used to indicate the nine distinct geological formations. Lithographed by Julius Bien.
References: Marcou & Marcou #67.
Issued folding with bold coloring. Light toning along a few folds with numerous small fold separations repaired on verso with archival tape.