Popular Mechanics, v. 74, n. 4, 1940

Google books

1940-10

Public Domain (Google digitized)

Is Part Of
Title	Alternate label	Class
Barge with Eight-Inch Guns Is Floating Fort
Model Ocean Liner "Torpedoed" for Movies
Lightweight Plane Armor Made of Rubber and Steel
Flying Nurses
Steel "Tent" and Concrete "Igloo" Resist Bombs
The Search for War Metals
Turreted Fort Is Convertible from Dirt Truck
Winged Daredevils of Science
Car Runs on Meager Gas Diet to Meet Wartime Rations
Lockjaw Vaccine Averts Death from Wounds of Battle
Speed the Key to War
Outdoor Assembly Speeds Plane Production
New Tasks for War Baloons
Three-Way Semi-Automatic Rifle Converts into a Machine Gun
Bomber versus Battleship - Which Will Win?
How Ship Defends Itself Against Air Raiders
Radio Controls Model Boat Carrying Explosive
Movie Screen on a Traveling Van Carries Message to Public
Motor Truck Spins Airplane Propeller to Start Balky Engine
Fast Earth-Borer Digs Tank Traps for Army
Guncraft in the Home Workshop, part one