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In 1918 the gas mask was invented. The biological warfare that was prevalent during the Great War necessitated that the gas mask be reinvented many times in one year
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1st US air passenger service starts
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Harry S Truman marries Elizabeth Virginia Wallace in Independence
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In 1921 the radio was pram was invented.
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President Calvin Coolidge makes 1st presidential radio speech
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Famous American Author Gene-Stratton-Porter dies
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(8) 60-MPH tornadoes speed Mo, In, Il, Ky, & Tn kills 689
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1st public demonstration of television, John L Baird, London
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Babe Ruth becomes highest paid baseball player ($70,000 per year)
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"Tarzan," one of the 1st adventure comic strips, 1st appears
