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William J. Hammer Collection
The Historic Pearl Street New York, Edison Station by John W. Lieb, first electrician of the station Edisonia
Miscellaneous Machinery Blue prints
Photographs reproduced in the pages of The Electric Age
The Micro-Graphophone, Science
Hillman, H.W., "An Electric Day," Good Housekeeping
News and periodical clippings
Hammer scientific collection (all aspects)
Menlo Park, New Jersey -- includes Edison's Laboratory and the first electric lamp factory
Photographs of the Edison M. 30cp "Ghost"
Paris Exposition (photo album)
Lamp bulbs, bulbs, sockets