Report of the geological exploration of the fortieth parallel
By: made by order of the secretary of war according to the acts of congress of March 2, 1867, and March 3, 1869, under the direction of ...A.A.Humphreys, chief of engineers, by Clarence King, U.S.geologist
Contributors: King, Clarence, 1842-1901; Hague, Arnold, 1840-1917; Emmons, Samuel Franklin, 1841-1911; Hague, James D. 1836-1908; Meek, F. B. 1817-1876; Hall, James, 1811-1898; Whitfield, Robert Parr, 1828-1910; Ridgway, Robert, 1850-1929; Watson, Sereno, 1826-1892; Eaton, Daniel Cady, 1834-1895; Bien, Julius, 1826-1909, engraver
Series: Professional papers of the engineer's department, U.S.army -- no. 18
Publisher: Government Printing Office
Published: 1870
Place of publication: [Washington
Language: eng
Subjects: Geology -- United States; Mines and mineral resources -- United States; Paleontology -- United States; Botany -- West (U.S.); Birds -- United States; United States -- Discovery and exploration; Comstock Lode (Nev.)
Notes: Each volume has special t.p

Atlases have titles as follows:"Atlas accompanying volume III. Mining industry ...New York, Engraved and printed by Julius Bien" and"Geological and topographical atlas ...1876. Julius Bien,lith."
Table of contents: title: I.(1878) Systematic geology, by Clarence King.; title: II.(1877) Descriptive geology, by Arnold Hague and S.F.Emmons.; title: III.(1870) Mining industry, by James D.Hague, with geological contributions by Clarence King.; title: IV.(1877) pt.I. Palaeontology, by F.B.Meek. pt.II. Palaeontology, by James Hall and R.P.Whitfield. pt.III. Ornithology, by Robert Ridgway.; title: V.(1871) Botany. By Sereno Watson, aided by Prof. Daniel C.Eaton, and others.; title: VI.(1876) Microscopical petrography, by Ferdinand Zirkel.; title: VII.(1880) Odonthornithes:a monograph on the extinct toothed birds of North America ...by Othniel Charles Marsh