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Dummy of Modern Warship is Erected for Naval Festival Dummy of Modern Warship is Erected for Naval Festival
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Field Gun Fires 100-Pound Shell over Fifteen-Mile Range Field Gun Fires 100-Pound Shell over Fifteen-Mile Range
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U. S. Warship Hoists Canvas for an Extra Lift of Speed U. S. Warship Hoists Canvas for an Extra Lift of Speed
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Four-Blade Aircraft Propeller for Fast Pursuit Planes Four-Blade Aircraft Propeller for Fast Pursuit Planes
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Popular Mechanics, v. 72, n. 4, 1939
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La Domenica del Corriere, a. 46, n. 46, 1944
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La Domenica del Corriere, a. 46, n. 45, 1944
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La Domenica del Corriere, a. 46, n. 44, 1944
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La Domenica del Corriere, a. 46, n. 43, 1944
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La Domenica del Corriere, a. 46, n. 42, 1944
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La Domenica del Corriere, a. 46, n. 40, 1944
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Play Machine Gun Stutters Challenge to Foe Play Machine Gun Stutters Challenge to Foe
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Scout Plane Converted into a Bomber by Fitting Racks to Landing Gear Scout Plane Converted into a Bomber by Fitting Racks to Landing Gear
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Planes Get "Turkish Bath" for Fast and Easy Clean-Up Planes Get "Turkish Bath" for Fast and Easy Clean-Up
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Automatic Sight for Rifle Ends Guesswork Automatic Sight for Rifle Ends Guesswork
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Bouncing Radio Beam Warns Pilot of Danger Bouncing Radio Beam Warns Pilot of Danger
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Baby's Life Size Gas Mask Also Is Used by Its Mother Baby's Life Size Gas Mask Also Is Used by Its Mother
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Popular Mechanics Magazine, v. 72, n. 3, 1939
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Winged Bullet Pursuit Planes Carry Two Machine Guns Winged Bullet Pursuit Planes Carry Two Machine Guns
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Steel Helmet Sprout Foliage to Camouflage Artillerymen Steel Helmet Sprout Foliage to Camouflage Artillerymen
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"Blister" on Camouflaged Plane Houses Gun "Blister" on Camouflaged Plane Houses Gun
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La Domenica del Corriere, a. 46, n. 38, 1944
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La Domenica del Corriere, a. 46, n. 36, 1944
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La Domenica del Corriere, a. 46, n. 35, 1944
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La Domenica del Corriere, a. 46, n. 34, 1944
