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Creators:
Electricity and Modern Physics, Division of, NMAH, SI.
Varian, Russell H., 1898-1959 (electrical engineer)
Dates:
1937.
Size:
0.15 Cubic feet (1 box)
Collection ID:
NMAH.AC.0110
Repository:
Archives Center, National Museum of American History

Two notebooks, April 12-July 14 and July 14-September 8, 1937, documenting development of the klystron tube at Stanford University.

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Dates:
1904-1922
Level:
series
Collection ID:
NMAH.AC.0055
Repository:
Archives Center, National Museum of American History

Series 128 contains advertisements; articles; apparatus orders of the Federal Telegraph Co.; blueprints; booklets of the Telefunken System of Wireless Telegraphy; correspondence, 1913, 1916 & 1918; diagrams; drawings; graphs, memoranda, notes; photographs; schematic diagrams and tests. There are general descriptions of systems but usually items are...

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Dates:
1898-1941
Level:
series
Collection ID:
NMAH.AC.0055
Repository:
Archives Center, National Museum of American History

Series 129 contains articles; booklets; descriptions for operation; diagrams; instructions; instruction books; news clippings; operating instructions; periodical clippings; photographs; and schematic tracings of spark transmitting and receiving systems. There are general descriptions of systems but usually items are designated by the name of the in...

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Dates:
1902-1939
Level:
series
Collection ID:
NMAH.AC.0055
Repository:
Archives Center, National Museum of American History

Series 130 on vacuum tube transmitting and receiving systems consists of articles; booklets; correspondence, 1937; schematic diagrams; graphs; and news clippings. It includes general descriptions of systems and descriptions of systems designated by the name of the inventor, such as the "De Forest system". This series includes both code and speech s...

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Dates:
1878-1944
Level:
series
Collection ID:
NMAH.AC.0055
Repository:
Archives Center, National Museum of American History

Series 50 consists of material relating to detectors, especially where constructed as self-contained units. Included are coherers, tone wheels, tickers, magnetic detectors, vacuum tube detectors with control, complete; cat-whisker detectors; crystal detectors; electrolytic detectors; group tuners for use in the audio circuit, tone testers, detector...

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Dates:
1857-1952
Level:
series
Collection ID:
NMAH.AC.0055
Repository:
Archives Center, National Museum of American History

Series 87 contains photographs and news clippings of groups and individual radio people, such as executives, inventors and operators. For example, David Sarnoff (Box 378=0001-0320). See also Series M for list of photographs of Sarnoff arranged by document numnber. It does not include photographs of broadcast, television, and phonograph artists and ...

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Dates:
1949
Level:
subseries
Collection ID:
NMAH.AC.0277
Repository:
Archives Center, National Museum of American History

This subseries consists of documentation about patent searches conducted by United Shoe Machinery Corporation for non-commercial patents assigned to United Shoe Machinery Corporation from January 1, 1920 to July 25, 1920. The search was conducted in 1949 presumably for the purposes of litigation. The search compiled data that included the name of...

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Creators:
Upton, B. F. (Benjamin Franklin)
Dates:
circa 1962
Size:
1 Mounted print (albumen)
Collection ID:
NAA.PhotoLot.99-25
Repository:
National Anthropological Archives

Carte de visite depicting Mdewakanton Dakota women identified as Little Crow's daughters. The photograph, which is part of the series Upton's Collection of Photographic Views, was possibly made in Mankato, Minnesota, after the Sioux uprising in 1962.

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Level:
file
Collection ID:
NMAH.AC.0164
Repository:
Archives Center, National Museum of American History

PLW-Design of 22" X 26" ATL Type Pass engine, Nos.1456-1465, Class; Design of 21" X 30"Consolidation engines, Nos.1955-1958; Design of 22" X 28"Consolidation engines, Nos.1706-1738; Richmond,1739-1753 Pittsburgh, Class 1-7; General dimensions of Std. Locomotives P.R.R.;Arrangement of Reducing Valve, Intercepting Valve, and Operating Device, PLW,Two...

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Dates:
1840-1970
Level:
series
Collection ID:
NMAH.AC.0205
Repository:
Archives Center, National Museum of American History

Many of the patents in this series trace the development and improvements in the telegraph (and some telephone) apparatus between 1840 and 1954. The patentee subseries is arranged alphabetically by inventor: Charles Buckingham, Thomas A. Edison, Elisha Gray, Samuel F.B. Morse, George Phelps, Joseph Stearn, John Skirrow, and Charles Wheatstone. The ...