SMITHSONIAN CONTRIBUTIONS TO KNOWLEDGE— SHERZER. 



PLATE XX. 



50 



Scale 

 100 200 

 _iJ I 



300 +00 ft. 



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Map of delta, head of Lake Louise, by VV. H. Sherzer. Plane-table survey, July, 1904. Field assistants De 



Forrest Ross and Frederick Larmour. 



