On New Year's Eve, 1879, Thomas Edison unveiled his newest invention: the electric light. Reporters came from all over the U.S. to see Edison's Menlo Park lab lit up with his incandescent bulbs.
Alexander Graham Bell demonstrated his new invention, the telephone, at the 1876 Centennial Exposition in Philadelphia’s Fairmount Park.
In the fall of 1922, a film crew came to West Orange, New Jersey to document Thomas Edison going about his day.
On December 7, 1877, Edison demonstrated his phonograph at the New York City offices of the nation's leading technical weekly publication, Scientific American.