First Edition

"Geological Map of the United States Compiled for the 9th Census by C.H. Hitchcock and W.P. Blake", Hitchcock, Charles Henry

This large and very colorful thematic map is the first edition that, according to Marcou & Marcou, was dated 1874 but some "copies dated 1872…were privately distributed." This is one of those scarce examples. It identifies railroads, roads, canals, army arsenals, forts and much more. A table at lower left provides an explanatory key to the colors used to indicate nine distinct geological types. The carefully drawn map presents a wonderful comingling of both geographical and geological detail. The base data is from the War Department's "Military Map of the United States," used by permission of the Chief of Engineers. A seldom seen version of Hitchcock's standard map.

References: Marcou & Marcou #70; Phillips (A) #1330.

Condition: B+

A colorful example, issued folding, with some minor foxing mostly along the left and right borders. A few tiny fold separations have been closed on verso.