I have an NAR flyer from possibly '60 or '61 that lists the address as
Suite 1962, 11 W. 42nd St. New York 36,NY
The 1965 edition of "Handbook of Model Rocketry" shows an address of
1239 Vermont Avenue N.W. Washington D.C. 20005
The 1975 edition lists it as P.O. Box 725, New Providence NJ 07974
I'll peruse some of my old stuff , if I find others I'll pase them on.
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