I came across this lovely site, featuring magazines from years long ago. As I’m a sucker for old articles about the cutting edge of future technology, the ones from Modern Mechanix, Popular Science and Popular Mechanics are a particular delight.
One thing I noticed: they really had a thing for death rays back in the ’30s:
Popular Science, February, 1940
Modern Mechanix, October, 1936
Modern Mechanix, August, 1935
Modern Mechanix, August, 1936
Modern Mechanix, September, 1934