05/04/1879 Soulages, Dr C C to Goddard, Calvin
(Fabbri, Egisto Paolo; Edison, Thomas Alva) Dynamos and generators [Attachment/Enclosure]
[D7920]  Document File Series -- 1879: (D-79-20) Electric Light -- Edison Electric Light Co
[D7920ZAL; TAEM 50:257]
Courtesy of Thomas Edison National Historical Park.