EXPLORATIONS AND SURVEYS FOR A RAILROAD ROUTE FROM THE MISSISSIPPI RIVER TO THE PACIFIC OCEAN 
WAR DEPARTMENT. 
H AND THIRTY-SECOND (URS 
ROUTES IN CALIFORNIA, TO CONNECT WITH THE ROUTES NEAR THE THIRTY-F 
LORED BY LIEUT. R. S. WILLIAMSON, CORPS OF nob cKLEENUE ENGINEERS, IN 1853. 
