Biodiversity Heritage Library
By "United States. Geological Exploration of the Fortieth Parallel. "
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 /
By: United States. - King, Clarence,
Publication info: Washington :Government Printing Office,1870-1880.
Contributed by: University of Michigan (archive.org)