This folder contains correspondence and other documents relating to the operations of the West Orange laboratory. Included are items pertaining to experiments and tests conducted at the laboratory. There are also letters regarding the cleaning of the boiler and the inspection of the buildings for fire hazards. At the end of the folder are numerous undated notes from John Randolph, with comments by Edison, concerning accounts billed by the laboratory.

All of the documents have been selected.

Courtesy of Thomas Edison National Historical Park.