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 Eed river to the Eio G-rande. 
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 he found my apology for the voluminous character 
of the report. 
I am, sir, respectfully, your obedient servant, 
JNO. POPE, 
Brevet Captain Top. Engs., in charge of Exploring Expedition „ 
Hon. Jefferson Davis, 
Secretary of War, Washington, D. C. 
