Lees Instrument Research, Inc. 

 35 Cambridge Parkway 

 Cambridge 42, Massachusetts 



E. Leitz, Inc. 



468 Park Avenue South 



New York 16, New York 



Leupold &t Stevens Instruments, Inc. 

 4445 N. E. Glisan Street 

 Portland 13, Oregon 



Librascope 



Division of General Precision, Inc. 



808 - I7th Street NW, Suite 314 



Washington, D. C. 



Attn: John M. Frye 



Lidgerwood Manufacturing Company 



57 Dey Street 



New York, New York 



Ling-Altec Research Division 

 Ling-Temco- Vought, Inc. 

 1859 South Manchester Avenue 

 P. O. Box S-1 

 Anaheim, California 



Ling-Temco- Vought, Inc. 



P. O. Box 5003 



Dallas 22, Texas 



Attn: Hcirry Sanders, Director, 



Corporate ASW Engineering 



The Linen Thread Company, Inc. 

 Blue Mountain, Alabama 



Lithium Corporation of America, 



500 Fifth Avenue 



New York 36, New York 



Arthur D. Little Company 



Acorn Park 



Cambridge, Massachusetts 



Litton Industries 



336 North FoothiU Road 



Beverly Hills, California 



Litton Industries 

 I8I07 Sherman Way 

 Reseda, California 



Litton Industries, Inc. 

 Westrex Company 

 540 West 58th Street 

 New York 19, New York 



Inc. 



Litton Industries 

 1625 I Street NW 

 Washington 6, D. C. 



Litton Systems, Inc. 

 Maryland Division 

 2900 Caivert Road 

 College Park, Maryland 



Lockheed Aircraft Corjjoration 

 7225 80 A-1 

 P. O. Box 551 

 Burbank, California 

 Attn: G. W. Papen 



Lockheed Aircraft Corporation 

 ASW and Ocean Systems 

 2555 N. Hollywood Way 

 Burbank, California 



Lockheed Aircraft Corporation 

 Lockheed Nuclear Products 

 1500 Northside Drive NW 

 Atlanta 18, Georgia 



Lockheed California Company 

 Ocean Systems 

 Burbank, California 



Lockheed Electronics Company 

 Avionics &t Industrial Products Div. 

 6201 Randolph Street 

 Los Angeles 22, California 



Lockheed Electronics Company 

 Military Systems 

 U. S. Highway 22 

 Plainfield, New Jersey 

 Attn: Dr. E. M. Pritchard 



Lockheed Missiles and Space Company 

 3251 Hanover Street 

 Palo Alto, California 



Loral Electronics Corporation 

 825 Bronx River Avenue 

 New York 72, New York 

 Attn: Underwater Technology and 

 Oceanography Division 



Loral Electronics Corporation 

 1710 H Street NW 

 Washington 6, D. C. 



Macalaster-Bicknell Corp. 



243 Broadway 



Cambridge, Massachusetts 



296 



