EXPLORATIONS AND SURVEYS FOR A RAILROAD RODTE FROM THE MISSISSIPPI RIVER TO THE PACIFIC OCEAN. 



WAR DEPARTMENT. 



ROUTE NEAR THE FORTY-SEVENTH AND FORTY-NINTH PARALLELS, EXPLORED BY I. I. STEVENS, 

 GOVERNOR OF WASHINGTON TERRITORY, IN 1853-'55. 



BOTANICAL REPOET. 



WASHINGTON, D. C. 

 18 5 9. 



