06/30/1891 Kennelly, Arthur Edwin -- Technical Notes and Drawings
(Westinghouse Electric Co; Edison General Electric Co) Phonoplex and railroad telegraphy; Alternating current; Miscellaneous electrical technologies
[NM027]  Notebook Series -- Arthur E. Kennelly Notebooks: Notebook #5 (1891)
[NM027028; TAEM 105:309]
Courtesy of Thomas Edison National Historical Park.