This folder contains two documents regarding the Gibbs Rescue Apparatus, a breathing device invented by Edison employee William E. Gibbs for use by rescuers of trapped miners. The documents relate to the production of 15,000 rescue-apparatus cartridges in connection with the Mine Safety Appliances Co. and are annotated by Edison employees George B. Redfearn and Isaac W. Walker. Neither item pertains to Edison personally.

Courtesy of Thomas Edison National Historical Park.