EXPLORATIONS AND SURVEYS FOR A RAILROAD ROUTE FROM THE MISSISSIPPI RIVER TO THE PACIFIC OCEAN. 
WAR DEPARTMENT. 
ROUTE NEAR THE THIRTY-FIFTH PARALLEL, EXPLORED BY LIEUT. A. W. WHIPPLE, TOPO- 
GRAPHICAL ENGINEERS, IN 1853 AND 1854. 
REPORT 
THE GEOLOGY OF THE ROUTE. 
WASHINGTON, D. C. 
1856. 
