ADDRESS ONLY 
DIRECTOR. NATIONAL PARK SERVICE 
WASHINGTON. D. C. 
DEPARTMENT OF THE INTERIOR 
NATIONAL PARK SERVICE 
WASHINGTON 
D Eh VA 
January 6, 1922* 
Dear Dr. Holmes: 
Mr. Yard has referred to us your note, 
addressed to Him, of December 20, and we are writing to ad- 
vise you that the name Hayden Valley appears on the topo- 
graphic map of Yellowstone Park issued and for sale by the 
Geological ourvey. On tue small automobile guide map of the 
X^-ark, which this Service issues, tae name iaas heretofore been 
eliminated because of t^e smallness of the map. However, your 
suggestion that tne name appear is excellent and on the new 
issue of our small rnap we will try to show it. 
Cordially yours , 
Arno B. Cammerer 
Assistant Director* 
1 I § 7 ?, ii 
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Dr. W. H. Holmes, Director, 
national Gallery of Art, 
Smithsonian Institution, 
, Washington, A. C. - 
v ^^4 
