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Creators:
Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
Dates:
Circa 1900
Level:
item
Size:
1 Item (Silver albumen? on paper., 10.1" x 13.3")
Collection ID:
NMAH.AC.0069
Repository:
Archives Center, National Museum of American History

Lab contains a wide variety of items -- books, light bulbs, x-rays, photographs, recording machines, etc.

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Creators:
Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
Wright, Orville, 1871-1948
Dates:
July 17, 1913
Level:
item
Size:
1 Item (Ink on paper., 7.1" x 7.3")
Collection ID:
NMAH.AC.0069
Repository:
Archives Center, National Museum of American History

Acknowledgment for copies of "Chronolgy [sic] of Aviation." Photographic copy (?), cropped, marked 901.

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Creators:
Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
Dates:
July 17, 1913
Level:
item
Size:
1 Item (Ink on paper., 11.0" x 8.5")
Collection ID:
NMAH.AC.0069
Repository:
Archives Center, National Museum of American History

Thank you note for the copies of "Chronolgy [sic] of Aviation." Duplicate, marked 900.

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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:
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:
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)
Dates:
June 1906
Level:
item
Size:
1 Item (Ink on paper, 9.9" x 6.6")
Collection ID:
NMAH.AC.0069
Repository:
Archives Center, National Museum of American History

Page of article by H. W. Hillman appearing in Good Housekeeping, illustrated with image of bathroom and small electric appliances (small water heater for shaving, vibrator, and radiator)

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Creators:
Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
Dates:
1907
Level:
item
Size:
1 Item (10.4" x 13.5")
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:
[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