EXPLORATIONS AND SURVEYS FOR A RAILROAD ROUTE FROM THE MISSISSIPPI RIVER TO THE PACIFIC OCEAN. 
WAR DEPARTMENT. 
ROUTE NEAR THE THIRTY-SECOND PARALLEL OF NORTH LATITUDE. 
EXTRACT 
FROM 
REPORT OF A MILITARY RECONNAISSANCE, 
MADE IN 1846 AND 1847, 
LIEUT. COL. W. H. EMORY. 
