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Continue to ChatA technician doing maintenance work on the electromechanical telephone switches in the telephone exchange building at East 30th St., New York City, 1938. https://www.imgain.com/a-technician-doing-maintenance-work-on-the-electromechanical-telephone-switches-in-the-telephone-exchange-building-at-east-30th-st-new-york-city-1938/