Report of the Geological exploration of the fortieth parallel made by order of the secretary of war according to the acts of Congress of March 2, 1867, and March 3, 1869
Subtitle: under the direction of ... A. A. Humphreys, chief of engineers
By: by Clarence King, U.S. geologist.
Contributors: King, Clarence, 1842-1901.
Series: Professional papers of the Engineer's Department, U.S. Army -- no. 18.; Professional papers of the Engineer Department, U.S. Army -- no. 18.
Publisher: Govt. Print. Off.
Published: 1870
Place of publication: [Washington
Language: eng
Subjects: Birds -- United States.; Geology -- United States.; Mines and mineral resources -- United States.; Paleontology -- United States.; Botany -- West (U.S.); United States -- Discovery and exploration.; Comstock Lode (Nev.)
Notes: Each volume has special t.-p.

Atlases have titles as follows: "Atlas accompanying volume 3. Mining industry ... New York, Engraved and printed by Julius Bien" and "Geological and topographical atlas ... 1876. Julius Bien, lith."
Table of contents: value: 1. (1878) Systematic geology, by Clarence King.; value: 2. (1877) Descriptive geology, by Arnold Hague and S.F. Emmons.; value: 3. (1870) Mining industry, by James D. Hague.; value: 4. (1877) pt. 1. Palaeontology, by F.B. Meek. pt. 2. Palaeontology, by James Hall and R.P. Whitfield. pt. 3. Ornithology, by Robert Ridgway.; value: 5. (1871) Botany. By Sereno Watson.; value: 6. (1876) Microscopical petrography, by Ferdinand Zirkel.; value: 7. (1880) Odonthornithes, by Othniel Charles Marsh.