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Creators:
Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
Dates:
Circa 1900
Level:
item
Size:
1 Item (10.1" x 12.5")
Collection ID:
NMAH.AC.0069
Repository:
Archives Center, National Museum of American History

Lab contains a wide variety of items - books, lightbulbs, x-rays, photographs, recording machines, etc. Duplicate and cropped version of photograph in box 94, folder 3.