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  • Espenschied, Lloyd (electrical engineer),
     
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  • Electrical engineering
     
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  • Telecommunication
     
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  • Communication
     
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  • Telegraph, Wireless
     
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  • Radio
     
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  • Telefunken Wireless Telegraph Company
     
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  • American Telephone and Telegraph Company
     
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  • Bell Telephone Laboratories
     
     
    Lloyd Espenschied Papers, 1907-1969.
     
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    Creator: 
    Espenschied, Lloyd (electrical engineer), 1889-? (author).
    Title: 
    Lloyd Espenschied Papers, 1907-1969.
    Phy. Description: 
    11.3 cu. ft.: document boxes, 50 volumes.
    Bio / His Notes: 
    Espenschied was born in St. Louis and graduated from Pratt Institute in electrical engineering, 1909; on staff of the Telefunken Wireless Telegraph Company, 1909-10; worked for American Telephone and Telegraph Company in various capacities, 1910-34; directed high-frequency transmission development for Bell Telephone Laboratories, 1934-37. Chief interests seem to have been wide-band and carrier waves and wide band systems for communications.
    Scope and Content: 
    Miscellaneous information on the history of telephonic and wireless communication; considerable personal correspondence about men and events in the field, especially disputed claims of inventions, development, and the like.
    Organization: 
    Divided into 4 series: (1) Subject file, 1907-1964; (2) Papers and talks by Espenschied, 1923-1969; (3) Patents, 1928-1953; (4) Correspondence, 1947-1959.
    Provenance: 
    Transferred from the Division of Electricity, 4/13/83.
    Finding aids: 
    Preliminary inventory.
    Cite as: 
    Lloyd Espenschied Papers, Archives Center, National Museum of American History.
    Subject-Topical: 
    Electrical engineering
    Telecommunication
    Communication
    Telegraph, Wireless
    Radio
    Subject-Name: 
    Telefunken Wireless Telegraph Company
    American Telephone and Telegraph Company
    Bell Telephone Laboratories
    Repository Loc: 
    Smithsonian Institution, National Museum of American History : Archives Center. P.O. Box 37012, Suite 1100, MRC 601, Constitution Ave., between 12th and 14th Sts., N.W., Washington, D.C. 20013-7012. Call 202-633-3270 for appointment. Fax: 202-786-2453.
    Co-Creator: 
    Electricity and Modern Physics, Division of, NMAH, SI (collector).
    Item Information
    RepositoryCall No. 
    Archives Center at American HistoryACNMAH 0013Add Copy to MyList

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