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Popular Mechanics 1916-01

Popular Mechanics 1916-01.jpg Mother's Magazine - Home Life 1930-01ThumbnailsPopular Science 1941-08Mother's Magazine - Home Life 1930-01ThumbnailsPopular Science 1941-08Mother's Magazine - Home Life 1930-01ThumbnailsPopular Science 1941-08Mother's Magazine - Home Life 1930-01ThumbnailsPopular Science 1941-08Mother's Magazine - Home Life 1930-01ThumbnailsPopular Science 1941-08

French WW1 soldiers shown listening to the sky to hear oncoming airplanes: Electric ears detect invading air craft.



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Source: ebay seller powerangers

Restoration by: magscanner