This folder contains correspondence and other documents pertaining to the business of the Edison Manufacturing Co. Among the documents for 1908 are routine statements of account; memoranda regarding prices, board meetings, and company officers; and correspondence concerning the supply of phonoplex circuits. One letter regarding the phonoplex contains Edison marginalia granting an outside company permission to make and supply some circuits.

Other items in the Document File relating to the Edison Manufacturing Co. can be found in D-08-02 (Battery - Primary) and in D-08-32 (Motion Pictures).