4734 records — Page 130 of 470
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Creators:
Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
Dates:
1893
Level:
item
Size:
1 Item (7.0" x 5.0")
Collection ID:
NMAH.AC.0069
Repository:
Archives Center, National Museum of American History

"Proof of my [William Hammer] discovery in Feb 1881 of "Phantom Shadow" written on the photo.

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Creators:
Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
Dates:
Circa 1920
Level:
item
Size:
1 Item (Silver gelatin on paper, 7.7" x 13.1")
Collection ID:
NMAH.AC.0069
Repository:
Archives Center, National Museum of American History

The display lists makers name, date, and other details. Dates range from 1881 to 1883; makers Nothomb, Gatehouse, Rogers, and Latimer.

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Creators:
Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
Dates:
[ca. 1880s.]
Level:
item
Size:
1 Item (Silver gelatin or albumen? on paper, mounted.)
Collection ID:
NMAH.AC.0069
Repository:
Archives Center, National Museum of American History
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Creators:
Clark, George H.
Dates:
undated
Level:
item
Size:
1 Item (Silver gelatin on paper., 8.2" x 10.9".)
Collection ID:
NMAH.AC.0055
Repository:
Archives Center, National Museum of American History
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Creators:
Clark, George H.
Dates:
1929
Level:
item
Size:
1 Item (Silver gelatin on paper., 6.2" x 9.1".)
Collection ID:
NMAH.AC.0055
Repository:
Archives Center, National Museum of American History
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[ ]
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Creators:
Clark, George H.
Dates:
1930
Level:
item
Size:
1 Item (Silver gelatin on paper., 6.0" x 8.7".)
Collection ID:
NMAH.AC.0055
Repository:
Archives Center, National Museum of American History
4734 records — Page 130 of 470