These documents cover the period December 1877-October 1878. They relate to the Edison Speaking Phonograph Co., which was organized in January 1878 by several executives connected with the Bell Telephone Co. to market Edison's newly invented phonograph. The items pertain primarily to the formation of the company. They are arranged in the following order: (1) Correspondence; (2) Printed Materials. Courtesy of the AT&T Archives and History Center.