Report of the Geological Exploration of the Fortieth Parallel, made by order of the Secretary of War according to acts of Congress of March 2, 1867, and March 3, 1869
- publisher: Washington : Government Printing Office
- creator: United States. Geological Exploration of the Fortieth Parallel King, Clarence, 1842-1901
- contributor: King, Clarence, 1842-1901.
- Keyword: Geology United States Mines and mineral resources United States Natural history United States.
- years: 1870-1880.
- pages: 7 v. :
- class: f QE 74
- download: pdf file
