Who made the first transcontinental phone call?

On January 25, 1915, Alexander Graham Bell placed the first transcontinental telephone call from 15 Dey Street, New York, New York.

Bell had discovered the science of talking over insulated copper wire. The call was made across a telephone wire that Bell and his people had strung across the continental U.S.

Thomas Watson, Bell's former assistant, was at 333 Grant Avenue, San Francisco, California when he received the call and the two men repeated their first, history-making conversation.

There were extensions in a few cities connected to that first line. A number of dignitaries, including mayors, governors and the President, got to experience the miracle of long-distance calling that day.