With Ella Delora he coauthored Dakota Grammar a far cry from his first publication, Growth of Children.  
His last major accomplishment was a filming trip with his field assistant, Julia Averkieva, when he was 70 years old.  With Ella Delora he coauthored Dakota Grammar a far cry from his first publication, Growth of Children.  His most famous work was done amongst the Kwakiutl Indians and during his excursions to Baffin Island.  These resulted in works like The Mind of the Primitive Man and the respect of students like Edward Sapir and Ruth Benedict.  FTP, name this founder of American anthropology.
His last major accomplishment was a filming trip with his field assistant, Julia Averkieva, when he was 70 years old.  
Franz Boas