These nine documents were selected from box 20 in Series 1 of William J. Hammer Collection. They relate to Edison's demonstration central station at the Holborn Viaduct in London, which began operation on January 12, 1882. Included are technical notes and drawings by chief engineer Hammer and general manager Edward H. Johnson; a 25-page report made to the Edison Electric Light Co., Ltd., by John Hopkinson and John Ambrose Fleming; and a copy of Britain's Electric Lighting Act of 1882 providing for local licenses for the supply of electricity. Also included are retrospective notes regarding the Holborn Viaduct made by Hammer in 1888 and a copy, made by Hammer in 1927, of Johnson's notes of 1881-1882.
[X098F03], Test Report, William Joseph Hammer, February 22nd, 1882 1882-02-22
[X098F04], Report from John Hopkinson, John Ambrose Fleming, July 1882 1882-07-00
[X098F05], Statute, Great Britain. Parliament, August 18th, 1882 1882-08-18
[X098F06], Test Report, Babcock and Wilcox, October 30th, 1882 1882-10-30
[X098F07], Technical Note, William Joseph Hammer, 1882 1882-00-00
[X098F08], Technical Note, William Joseph Hammer, 1882 1882-00-00
[X098F09], Technical Note, William Joseph Hammer, 1882 1882-00-00
[X098F10], Article, William Joseph Hammer, March 5th, 1904 1904-03-05
[X098F11], Technical Note, Edward Hibberd Johnson, May 30th, 1927 1927-05-30