08/11/1880 Upton, Francis Robbins -- Technical Notes and Drawings
(Jordan, Sarah; Force, Martin N; Herrick, Albert Bledsoe; Segredor, John R; Mills, William Albert; Kruesi, John; Edison, Thomas Alva; Hammer, William Joseph) Research and development; Central stations; Electrical distribution system
[N112]  Notebook Series -- Menlo Park Notebooks: Notebook #112 N-80-07-23 (1880)
[N112257; TAEM 36:969]
Courtesy of Thomas Edison National Historical Park.