"Gray's Atlas Map of the United States Showing the Principal Geological Formations", Hitchcock, Charles Henry
Subject: United States, Geology
Period: 1874 (circa)
Publication: Gray's Atlas of the United States...
Color: Hand Color
26.5 x 16.2 inches
67.3 x 41.1 cm
This atlas map was drawn by Charles Henry Hitchcock, whose first geological map of the United States was completed in 1872. It presents remarkable geological detail with a color-coded legend identifying six different geological types including Eozoic, Paleozoic, Coal Measures, Mesozoic, Conozoic, and Volcanic. Geographic features include major mountains, cities, rivers, and a few major cities.
A colorful example with light toning along the sheet edges and a couple of short edge tears confined to the blank margins that have been closed on verso with archival tape.