EXPLORATIONS AND SURVEYS FOR A RAILROAD ROUTE FROM THE MISSISSIPPI RIVER TO THE PACIFIC OCEAN. 
AVAR DEPARTMENT. 
ROUTES IN CALIFORNIA, TO CONNECT WITH THE ROUTES NEAR THE THIRTY-FIFTH AND THIRTY-SECOND 
PARALLELS, EXPLORED BY LIEUT. R. S. WILLIAMSON, CORPS OF TOP. ENG., IN 18,53. 
ZOOLOGICAL REPORT. 
WASHINGTON, D. C 
