America in the 1970s: New York City. Public pay phone stalls in use at Broadway and 34th Street, in May of 1973. The first handheld mobile phone call in history was made one month prior to this photo, in midtown Manhattan, in April 1973, when Martin Cooper, a Motorola researcher made a call to his chief competitor Dr. Joel S. Engel, head of Bell Labs. (Photo by Erik Calonius/NARA via The Atlantic)
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