This folder contains memoranda, correspondence, and other documents relating to the operation of the West Orange laboratory. Included are lists made by Edison of chemicals to be obtained, correspondence pertaining to insurance and machine tools for the lab, and orders directed to the laboratory storekeeper. Also included is correspondence between Edison and the Essex and Hudson Gas Co. regarding an agreement to supply the laboratory, the Edison Phonograph Works, and the Edison Storage Battery Co.

Approximately 10 percent of the documents have been selected. These consist primarily of orders in Edison's hand, a general notice to employees, and specifications for a sign to be hung in front of the laboratory.