INITIAL DISTRIBUTION 



Chief Bureau of Ships 



2 Technical Information Branch (Code 335) 



1 Technical Assistant (Code 106) 



1 Laboratory Management (Code 320) 



1 Ship Silencing Branch (Code 345) 



1 Antisubmarine Warfare and Ocean Surveillance 



Division (Code 370) 

 1 Sonar Branch (Code 688) 



1 Chief, Bureau of Naval Weapons, Code RUDC 5 



2 Office of Naval Research 



1 Underseas Warfare Branch (Code 466) 

 1 Acoustics Branch (Code 411) 



2 Director 



U.S. Naval Research Laboratory- 

 Technical Information Division 

 Washington 25, D. C. 

 1 (Sound Division) (Code 5560) 



1 Commanding Officer 



Office of Naval Research Branch Office 

 Box 39 Navy #100, Fleet Post Office 

 New York, New York 



1 Commander 



U. S. Naval Ordnance Laboratory 

 Acoustic Division, White Oak 

 Silver Spring, Maryland 



1 Commanding Officer and Director 



U.S. Navy Electronics Laboratory 

 San Diego 52, California 



1 Director 



U.S. Navy Underwater Sound Reference Laboratory 

 Office of Naval Research, P. O. Box 8337 

 Orlando, Florida 



1 Commanding Officer and Director 



U.S. Navy Underwater Sound Laboratory 



Fort Trumbull 



New London, Connecticut 



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