Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean: Vol. 2, Pt. 4

WASHINGTON, D. C., October 17, 1854
SIR: I have the honor to transmit herewith a report and maps of the survey of a route for the
Pacific railroad, near the thirty-second parallel, from Red river to the Rio Grande.
My instructions required me to examine also the military features of the route; and in this
fact, and the short time at my disposal, is to be found my apology for the voluminous character
of the report.
I am, sir, respectfully, your obedient servant,
JNO. POPE,
Brevet Captain Top. Engs.> t charge of Exploring Expeditio.
Hon. JEFFERSON DAVIS,
Secretary of War, Washington, D. C.