Leverett, Frank. [MAP] Map of the Pleistocene Deposits of Illinois and Western Indiana (1896). New York: Julius Bien & Co., 1896. [9165]
11 1/4 x 14 1/2 inches, a beautiful color map showing the effects of glacier movement, soils, deposits, &c., suitable for framing. Very good.
The colors indicate glacial ridges, till plains, loess-covered till, sandy deposits, &c.
Extracted from the Seventeenth Annual Report, U. S. Geological Survey.