EXPLORATIONS AND SURVEYS FOR A RAILROAD ROUTE FROM THE MISSISSIPPI RIVER TO THE PACIFIC OCEAN. 
WAR DEPARTMENT. 
REPORT 
EXPLORATIONS FOR RAILROAD ROUTES 
SAN FRANCISCO BAY TO LOS ANGELES, CALIFORNIA, 
WEST OF THE COAST RANGE, 
AND FROM 
THE PIMAS VILLAGES ON THE GILA TO THE RIO GRANDE, 
NEAR THE 32D PARALLEL OF NORTH LATITUDE, 
LIEUTENANT JOHN G. PARKE, 
CORPS OF TOPOGRAPHICAL ENGINEERS, 
ASSISTED BY 
ALBERT H. CAMPBELL, 
Cmii ENGINEER. 
1854-5. 
