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Alexander Graham Bell was awarded the first U.S. patent for the invention of the telephone in 1876. Elisha Gray, 1876, designed a telephone using a water microphone in Highland Park, Illinois. ... Thomas Edison invented the carbon microphone which produced a strong telephone signal ~ Wikipedia 

it's National Telephone Day! Celebrating phones from 1876 until today! We've come a long way. Listeners sent us some photos of their classic phones .... including our sister station 105.7 the Hawk! By the way no one knows the number to the "hotline"

National Telephone Day