DEPARTMENT OF THE .INTERIOR 
UNITED STATES GEOLOGICAL SURVEY 
GEORGE OTIS SMITH, Director (% A 
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Uy 
VAs 
BULLETIN 611 
GUIDEBOOK 
OF THE 
WESTERN UNITED STATES 
PART A. THE NORTHERN PACIFIC ROUTE 
WITH A SIDE TRIP TO YELLOWSTONE PARK 
BY 
MARIUS R. CAMPBELL AND OTHERS 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1915 
MissouRr! BOTANICSa® 
GARDEN LISRARY 
