Profiles of the main routes surveyed, compiled in 1855, by Lieutenants G.K. Warren & H.L. Abbot, Corps Topl. Engineers; with revisions and additional compilations from the results of subsequent examinations and surveys. Prepared in the Office of Pacific Rail Road Explorations and Surveys. Captain A.A. Humphreys, Corps Topl. Engineers, in charge, by direction of Hon. Jefferson Davis, Secretary of War. 1856. Explorations and Surveys for the Rail Road Routes from the Mississippi River to the Pacific Ocean, War Department. (with) Profiles of rail roads constructed across the Alleghany mountains.