Popular Mechanics, v. 74, n. 6, 1940

Google books

1940-12

Public Domain (Google digitized)

Is Part Of
Title	Alternate label	Class
Robot Television Bomber
How Mines Help Guard America's Harbors
The World's Biggest Bomber
Vaccine to Prevent Measles May Avert Epidemics in Army Camps
Target Airplane on Trolley Trains British Air Gunners
Building for Defense
X-Ray Clinic in Trailer Serves at War Front
Twin-Engine Interceptor Plane Flies 500 Miles an Hour
Truck Serves as Mobile Base for Army Observation Balloon
Airplane Landed by Parachute from 500-Foot Height
Air-Powered Machine Gun Fires 10,000 Shots a Minute
Outboard Boat Fitted for War with a Torpedo Sling on Deck
Radio-Controlled Target Boats Help Train Navy Bombers
Fast Army Tractor Pulls Five-Ton Load at Fifty
Huge Diesel-Electric Tugs Attend Fleet at Sea
Warplanes Made Difficult to See in Day and Night Sky
Dive Bomber Adds Fire Power to Carrier
Army Wants New Machine Gun Air Cooled, Lightweight
Flying "Sausage" on a String Is Still Eye of Army
Silver May Take the Place of Tin If Wartime Shortage Occurs