HOLMES TOWER, GRAM) CAN YOU OF THE COLORADO 
"Further explorations have since been made under 
the direction of the United States Geological Survey 
while Major Powell was its Director, and as a result Cap- 
tain Clarence E. Dutton has published one of the most 
interesting monographs ever penned by a specialist. Its 
title is "The Tertiary History of the Grand Canyon District 
and it is accompanied by a large atlas containing admirable 
pictures, etc., of the Grand Canyon region, - from sketches 
made by Mr. W. H. Holmes, the accomplished field geologist, 
artist, archaeologist, and writer, now in charge of the 
Anthropological Department of the United States National 
Museum. No praise bestowed upon these gentlemen, for 
the fidelity with which they have described this marvellous 
rock region, can ever be adequate return for the pleasure 
they have afforded those who have enjoyed the fruit of 
their labors." 
("In and Around the Grand Canyon," by George Wharton James, 
p. 35) 1908. 
