06/03/1884 Exhibition. Philadelphia Electrical (1884) and Houston, Edwin James to Edison, Thomas Alva
(Franklin Institute) Expositions, demonstrations, lectures [Marginalia by Edison, Thomas Alva]
[D8464]  Document File Series -- 1884: (D-84-64) Exhibitions
[D8464H; TAEM 76:537]
Courtesy of Thomas Edison National Historical Park.