This folder contains correspondence and other documents relating to Edison's involvement in exhibitions, trade shows, anniversary celebrations, and meetings of electrical and other industries. Most of the selected documents for 1915 pertain to the Panama-Pacific International Exposition in San Francisco. Included are numerous letters exchanged between longtime associate T. Commerford Martin and Edison's assistant William H. Meadowcroft regarding plans to hold an Edison Day event at the Exposition and efforts, ultimately successful, to persuade the reluctant inventor to attend. A draft telegram to Henry Ford in Edison's hand indicates that as late as October 4, he considered it "impossible to go to Frisco." Also included are letters discussing Ford's participation at the Exposition, an itinerary of Edison's route to California, and items concerning the installation of Diamond Disc phonograph exhibits in the various state buildings at the Exposition. Other correspondents include longtime associate Charles C. Clarke, who attended an Edison Day celebration at the West Orange laboratory; Charles C. Moore, president of the San Francisco Exposition; and Edison associate J. M. Hill, who served as one of its representatives.

Approximately 20 percent of the documents have been selected, including all items written by Edison or bearing substantive marginalia by him.