*• 
R.M. Hollingshead Corporation 
CAMDEN 2, NEW JERSEY 
November 23, 19^9 
Dr. A. Wetmore, Secretary ; 
Smithsonian Institution " 
Washington, D. 0. 
Dear Dr. Wetmore* 
At the request of Mr. Paul Engstrum of the Aer-0-8pra Corporation, 
we are forwarding you today three cans of our #2 Insecticide, as 
supplied the United States Army Quartermaster, and three cans of 
our special Deodorant for use in the Aer-O-Spra gun. 
As tiie Deodorant is not in spout cans, it is suggested that you in¬ 
sert the material in the gun with the use of a pipette. 
Since there are many other products that we manufacture that you may 
be in need of for the coming expedition, do not hesitate to call on 
us. 
Very truly yours, 
R. M. HOLLINGSHEAD CORPORATION 
H. G. Lbderer, Ph.D. 
Director, Biological Laboratories 
HGLiJ 
