Popular Science (1872-Present Popular Science Publishing Co.) Vol. 135 #4
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Published Oct 1939 by Popular Science Publishing Co..
- .5" Spine split from top.
- Front cover detached 20%. Back cover detached 10%.
Vol. 135 #4, Oct. 1939 - Features include "Uncle Sam Arms Against the World", "World's Largest Pearl", "Streamlining the Texas Rangers", "Sky Railway Guides Aircraft" and more. 8.5" x 11.5", 266 pages, B&W. Cover price $0.15.