This folder contains correspondence and other documents relating to Edison's membership and activities in social clubs and professional societies. Among the documents for 1907 are items pertaining to the American Electrochemical Society, the Centennial Association of the Oranges, the Engineers' Club, the Republican Club of West Orange, and numerous other professional societies, automobile clubs, booster clubs, and philanthropic organizations. Some of the items contain Edison marginalia.

Less than 10 percent of the documents have been selected. The items not selected consist primarily of announcements, invitations that Edison declined, and correspondence from organizations in which he did not participate.