This folder contains correspondence and other documents relating to the business of the Lamp Works of the Edison General Electric Co., formerly the Edison Lamp Co. Some of the letters are by Francis R. Upton, general manager. Included are documents pertaining to royalty disputes over lamp sales and to alternating current lamps installed by competitors.

Approximately 20 percent of the documents have been selected. The following categories of documents have not been selected: routine business correspondence relating to payroll and shipping records; letters of transmittal and acknowledgement; other routine correspondence.

Related materials can be found in D-90-35 (Electric Light - Edison Lamp Co.).