EXPLORATIONS AND SURVEYS FOR A RAILROAD ROUTE EROM THE MISSISSIPPI RIVER TO THE PACIFIC OCEAN. 
WAR DEPARTMENT. 
ROUTES IN CALIFORNIA TO CONNECT WITH THE ROUTES NEAR THE THIRTY-EEFTH AND THIRTY-SECOND 
PARALLELS, AND ROUTE NEAR THE THIRTY-SECOND PARALLEL, BETWEEN TH E RIO GRANDE AND 
PIMAS VILLAGES, EXPLORED BY LIEUT. JOHN G. PARKE, CORPS OF TOPOGRAPHICAL ENGINEERS, IN 
1854 AND 1855. 
GENERAL REPORT. 
WASHINGTON, D. C. 
1857. 
