This folder contains correspondence and other documents to and from Edison's patent attorneys and agents relating to domestic and foreign patent applications, patent litigation, and other patent matters. Included are letters regarding patents for Edison's ore milling system, the phonograph, and the kinetograph. Many of the items pertain to patent applications on Edison's ore milling system in various foreign countries, such as Great Britain, Germany, Russia, and Spain. Among these are several letters exchanged between attorney Frank L. Dyer and his brother, Lt. George L. Dyer, who was stationed at the U.S. Legation in Madrid at the outbreak of the Spanish-American War. One of the letters contains comments by George L. Dyer about political conditions in the United States and Spain on the eve of the war.

Approximately 60 percent of the documents have been selected. The following categories of documents have not been selected: non-substantive correspondence about application fees, patent issues, renewals, taxes, and other routine transactions; bills and receipts from attorneys; letters of transmittal; documents that duplicate the information in selected items.

Related material can be found in D-98-16 (Electric Light - General Electric Co.).