Category:Popular Science Monthly, 1930

Media in category "Popular Science Monthly, 1930"

The following 4 files are in this category, out of 4 total.

• 
  Halbert P. Gillette, 1930.jpg 456 × 413; 41 KB
  
• 
  Popular science magazine aug 1930 no. 117.jpg 2,316 × 3,320; 1.99 MB
  
• 
  Scientist’s New Theories May Aid in Forecasting Weather Conditions, 1930.jpg 640 × 384; 60 KB
  
• 
  St. Louis electrical bread slicer, 1930.png 480 × 473; 170 KB