Iowa Geological Survey. Annual Report, 1897 with Accompanying Papers.
Des Moines: The Iowa Geological Survey, 1897. 10.25" x 7.25". 427pp. Green cloth, gilt spine lettering. Ownership signature, else a nice, near fine copy. This important scientific work includes sections on the geology of Dallas, Delaware, Buchanan, decatur, and Plymouth counties, and a section on the properties and tests of iowa building stones. The book contains 22 plates after photographs, maps and drawings, some of which are fold outs. Several of the maps are color lithographs. There are also 13 figures, a cross section illustration and six nice fold out maps. Calvin was a key figure in the geological sciences in Iowa. Hardcover (Item ID: 3016)