Where be the first receiver book issued?
Answers: Alexander Graham Bell was granted a official document on his telephone surrounded by 1876. He demonstrated it to visitors to the Philadelphia Centennial Exposition that same year. In precipitate 1878, he installed the first telephone exchange, within New Haven, Connecticut. The first telephone "book" - in truth just a single 14 cm. x 21 cm. sheet - be issued in New Haven surrounded by 1878.
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