This folder contains correspondence, interoffice communications, and other documents concerning the technical and commercial development of Edison's battery-powered safety lamp and its attachment to headgear for a portable, hands-free light source. The documents for 1914 relate primarily to plans to patent and market the lamp. An undated communication by chief engineer Miller Reese Hutchison complains about the delay in filing a patent application, while a subsequent communication concludes that the delay had proven to be "a blessing in disguise." An undated memorandum by Edison contains comments on patents previously issued for safety lamps.

Approximately 30 percent of the documents have been selected. The material not selected consists of routine reports, printed matter, and unsolicited correspondence, as well as duplicate and variant versions of selected items.