Combat Used AN6531 WWII Aviator Sunglasses – But Who was Captain M.D. Butler?

Contractors made an enormous amount of materials for the U.S. Army and Navy during WWII. According to American Optical’s website: “Between 1943 and 1944, a total of 10 million goggles frames, 5 million pairs of sunglasses and over 6.5 million pairs of lenses were ground and polished including 1.4 million prescriptions delivered to the Armed […]

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