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IS55 
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EXPLORATIONS AND SURVEYS FOR A RAILROAD ROUTE 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 REPORT. 
WASHINGTON, D. C. 
1 8 5 9 . 
