EXPLORATIONS AND SURVEYS FOR A RAILROAD ROUTE FROM TflE MISSISSIPPI RIVER TO THE PACIFIC OCEAN. 
WAR DEPARTMENT. 
ROUTE NEAE THE FORTY-SEVENTH AND FORTY-NINTH PARALLELS, EXPLORED BY I. I. STEVENS, 
GOVERNOR OF WASHINGTON TERRITORY, IN 1863-'G5. 
ZOOLOGICAL REPORT. 
WASHINGTON, D. 0 
1 8 5 9. 
