BUREAU OF AMERICAN ETHNOLOGY 



BULLETIN 70 PLATE. 26 



a, NORTH SIDE OF TOWER, SQUARE TOWER CANYON 

 (Photograph by Jacob Wirsula) 



b, D-SHAPED TOWER NEAR DAVIS RANCH, YELLOW JACKET CANYON 

 (Photograph by Jacob Wirsula) 



c, MODEL OF TOWERS IN McLEAN BASIN 

 (Photograph by De Lancey Gill) 



