[Geological reports] : explorations and surveys for a railroad route from the Mississippi River to the Pacific Ocean / War Department

Compilation of geological reports extracted from the publication: Reports of explorations and surveys, for a railroad from the Mississippi River to the Pacific Ocean, compiled by the United States War Dept. and published 1855-1860.

Geological report / by William P. Blake (includes Description of the fossil shells / T.A. Conrad) (1857) -- Report of the geology of the route near the thirty-second parallel prepared from the collection and notes of Capt. Pope / by William P. Blake (1856) -- Geological report of the country explored under the 38th and 41st parallels in 1853-1854 / by James Schiel (1855) -- Report of the geology of the route (1856) -- Geological report (1856) -- Geological report / by Thomas Antisell (1856)