1. The History of Technologic Advancements in Urology;Patel,2017
2. Electro Surgical Instrument Company certificate of incorporation and meeting minutes;Platt,1901
3. Manufacturers of Electrically Lighted Surgical Instruments and Electro-Therapeutic Apparatus Catalogue;ESI,1906
4. Interview at Electro Surgical Instrument Headquarters;McAndrews,2017