This folder contains correspondence relating to Edison's membership and activities in social clubs and professional societies. Among the documents for 1909 are items pertaining to the Commercial Telegraphers' Union, the American Institute of Electrical Engineers, and the Swedish Royal Academy of Sciences, which awarded Edison the Adelshald Gold Medal. There are also letters concerning numerous other professional societies, automobile clubs, booster clubs, and church, civic, and philanthropic organizations. Some of the items contain Edison marginalia.

Approximately 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.