4734 records — Page 167 of 470
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Creators:
Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
Dates:
January 10, 1904
Level:
item
Size:
1 Item (Ink on paper., 13.5" x 10.7".)
Collection ID:
NMAH.AC.0069
Repository:
Archives Center, National Museum of American History
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Creators:
Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
Dates:
January 25, 1904
Level:
item
Size:
1 Item (Ink on paper., 14.0" x 10.5")
Collection ID:
NMAH.AC.0069
Repository:
Archives Center, National Museum of American History
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Creators:
Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
Dates:
1880
Level:
item
Size:
1 Item (9.8" x 13.0".)
Collection ID:
NMAH.AC.0069
Repository:
Archives Center, National Museum of American History
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Creators:
Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
Dates:
[1881-1904]
Level:
subseries
Size:
2 Boxes (Approx. 150 photographs)
Collection ID:
NMAH.AC.0069
Repository:
Archives Center, National Museum of American History

Approx. 150 photographs of five World's Fairs: the Exposition Universelle (Paris 1889); the Berlin Exposition (1883, with an 1881 photograph); the London Crystal Palace Exposition (1882); the 1884 Philadelphia fair; the St. Louis fair, 1904; etc. Edison's inventions are numerous, but other scenes, such as the Eiffel Tower, are also included.

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Creators:
Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
Dates:
1884
Level:
item
Size:
1 Item (Silver gelatin on paper., 12.3" x 10.0")
Collection ID:
NMAH.AC.0069
Repository:
Archives Center, National Museum of American History

Column designed and built by William J. Hammer for the Franklin Institute International Electric Exposition at Philadelphia, Pennsylvania, 1884.

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Creators:
Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
Dates:
1891
Level:
item
Size:
1 Item (Silver gelatin on paper, 6.5" x 4.2")
Collection ID:
NMAH.AC.0069
Repository:
Archives Center, National Museum of American History
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Creators:
Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
Naegeli (Union Square, New York)
Dates:
April 20, 1893
Level:
item
Size:
1 Item (Silver albumen on paper, on cabinet card., 6.5" x 4.3")
Collection ID:
NMAH.AC.0069
Repository:
Archives Center, National Museum of American History

Studio portrait (cabinet print) by Naegeli, 46 E. 14th St., Union Square, New York City.

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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.

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Creators:
Du Mont, Allen B. (Allen Balcom), 1901-1965
Dates:
circa 1955
Level:
item
Size:
1 Item (Silver gelatin on paper., 8.1" x 10.0".)
Collection ID:
NMAH.AC.0018
Repository:
Archives Center, National Museum of American History

Staged commercial photograph with models. This type of television played two different stations simultaneously because it was actually two televisions in the same cabinet, with mirrors and polarizers to combine the images. One station was visible and audible without special equipment (?); the second station required the Polaroid glasses and earpiec...

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Creators:
Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
Dates:
1880 or 1881
Level:
item
Size:
1 Item (7.4" x 9.2")
Collection ID:
NMAH.AC.0069
Repository:
Archives Center, National Museum of American History
4734 records — Page 167 of 470