My favorite mass market magazine from the Depression era is Modern Mechanix & Inventions, which sported a long and fantastic series of covers, mostly by Norman Saunders. They're painted in strong unmissable colors and show us just what the autogyros, monorails, ocean liners and dirigibles of the future would not, it turned out, actually look like.

These magazines printed a wacky combination of futuristic speculation, plans for boat and airplane building(!), information on making radios and other devices, and simple around the house fix-it projects.