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Creators:
Knight, Thomas Coke
Radio Corporation of America.
Dates:
1920-1930
Level:
item
Size:
1 Item (8" x 10".)
Collection ID:
NMAH.AC.0055
Repository:
Archives Center, National Museum of American History

Photograph of 3 framed RCA advertisements: RCA Radiola 28, "Theatre of the Air, and RCA Loud Speaker Model 100 ("A Triumph!"). No. 2113 in file.

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Creators:
National Museum of American History (U.S.). Division of Information, Technology and Society
Dates:
1890 - 1930
Size:
6 Cubic feet (34 boxes)
Collection ID:
NMAH.AC.0715
Repository:
Archives Center, National Museum of American History

Photographic negatives and some glass plate negatives depicting subjects relating to the Division of Electricity and Modern Physics' artifact collections and research interests. Negatives include portrait photographs of engineers (Marconi, Tesla, Bell, and Zworykin), images of radios, telegraphy equipment, and phonographs.

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Creators:
Warshaw, Isadore, 1900-1969
Dates:
1893-1992
Size:
2.44 Cubic feet (consisting of 4.5 boxes, 1 folder, 5 oversize folders, 2 flat boxes (partial), 1 map case folder.)
Collection ID:
NMAH.AC.0060.S01.01.Radios
Repository:
Archives Center, National Museum of American History

A New York bookseller, Warshaw assembled this collection over nearly fifty years. The Warshaw Collection of Business Americana: Accounting and Bookkeeping forms part of the Warshaw Collection of Business Americana, Subseries 1.1: Subject Categories. The Subject Categories subseries is divided into 470 subject categories based on those created by Mr. Warshaw. These subject categories include topical subjects, types or forms of material, people, organizations, historical events, and other categories. An overview to the entire Warshaw collection is available here: Warshaw Collection of Business Americana

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Dates:
1911-1920
Level:
subseries
Collection ID:
NMAH.AC.0055
Repository:
Archives Center, National Museum of American History

Correspondence, 1911-1920 between the below listed individuals in the Pittsburg, Pa. and Brooklyn, N. Y. offices regarding the Arlington Salem Test and the publication of an article about it. The test was made primarily to allow the contractor, NESCO, to demonstrate, under service conditions, the effectiveness of the apparatus it had supplied to t...

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Dates:
1902-1935
Level:
series
Collection ID:
NMAH.AC.0055
Repository:
Archives Center, National Museum of American History

Series 102 contains abstracts; articles; blueprints; booklets; charts; circuit layouts; correspondence, 1904-1920; descriptions; diagrams; drawings; history of apparatus for radio telegraphy; illustrations; maps; operating instructions; periodical clippings; photographs; schedules of supplies; and specifications for transmitting and receiving syste...

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Creators:
Boas, Ernst P. (Ernst Philip), 1891-1955
Dates:
1927-1946
Size:
0.25 Cubic feet (2 boxes)
Collection ID:
NMAH.AC.0881
Repository:
Archives Center, National Museum of American History

The papers document Dr. Ernst P. Boas and his work with Benjamin Liebowitz and Dr. Ernst F. Goldschmidt to develop the cardiotachometer (US Patent 1,816,465), a device to measure patients' heart rates for long periods of time. Materials include Dr. Boas's correspondence, patient experiment data, articles, and reprints of journal articles authored by Dr. Boas and with others that relate to the development of the cardiotachometer.

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Creators:
United Telegraph Workers.
Western Union Telegraph Company
Dates:
circa 1820-1995
Size:
452 Cubic feet (871 boxes and 23 map folders)
Collection ID:
NMAH.AC.0205
Repository:
Archives Center, National Museum of American History

The collection documents in photographs, scrapbooks, notebooks, correspondence, stock ledgers, annual reports, and financial records, the evolution of the telegraph, the development of the Western Union Telegraph Company, and the beginning of the communications revolution. The collection materials describe both the history of the company and of the telegraph industry in general, particularly its importance to the development of the technology in the nineteenth and twentieth centuries. The collection is useful for researchers interested in the development of technology, economic history, and the impact of technology on American social and cultural life.

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Creators:
Craton, Forman H., 1902-1983
Dates:
1902-1983
Size:
4.15 Cubic feet (13 boxes)
Collection ID:
NMAH.AC.0454
Repository:
Archives Center, National Museum of American History

Diaries and memoirs, profusely illustrated with photographs and other mementos, which describe Craton's life, education and work experience as an engineer at General Electric in minute detail, and include his comments on the culture, current events and politics of the times; and correspondence, mostly letters from Craton to his wife and to his mother.

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