01/20/1882 Hammer, William Joseph -- Diaries and Journals
(Grosvenor, Hugh, (Duke of Westminster)) Electric light and power; Central stations
[X098FA]  Smithsonian Institution, Washington, D. C. -- National Museum of American History Archives Center: William J. Hammer Collection -- Holborn Viaduct -- Pocket Notebook (1881-1882)
[X098FA020A; TAEM 0:0]
Courtesy of the NMAH Archives Center.