ABSTRACT
A firm incorporated in 1910 in a reorganization of the earlier Edison companies; it was under this name that Thomas Edison carried on his business activities until his death. He himself was president from December 1912, when Frank L. Dyer resigned the post, until August 1926, when Edison turned the job over to his son Charles and became chairman of the board. In 1912 C.H. Wilson, general manager, became vice president as well. The firm included various units for particular products: phonograph division, Ediphone division, and divisions to handle nonaudio items like storage batteries. Blue Amberol cylinders were among the first products offered by the company, along with the Amberola player for them, followed by the Edison Diamond Disc. West Orange, New Jersey, was the center of research activity. In fact, the first of the famous tone tests took place there, in 1915, when soprano Anna Case and contralto Christine Miller demonstrated that their recorded voices on Diamond Discs were indistinguishable from their live ones.
