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Kennedy type 521 two-stage radio amplifier
Marked: "Type 521 / Two Stage Amplifier / The Colin B. Kennedy Co. / San Francisco / Saint Louis"; on metal tag: "Serial No. L5038W6". A two-stage audio amplifier using two 301-A triodes with a ...
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Post Office Savings Bank, Three Quarters of a Century
See more items in: Western Union Telegraph Company Records, Western Union Telegraph Company Records / Series 19: Public Relations Department Records / 19.13: Posters (British) ...
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Howe Radio Receiver
Crystal detector with adjustable cat's whisker, coil slider has 0-10 scale on plate. Terminals for ground, antenna and headphones. Reference: "Clymer-Greenwood" Maker: Howe Auto Products Co., Chicago, ...
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crystal radio receiver with vertical coil
Crystal radio receiver with vertical coil, written on bottom: "right ground / left ariel" [sic], and "lower down / ground [wire?] / higher up at / left is / ariel" [sic].
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Clar-O-Tuner model 2RK radio receiver
Marked on box: "Manufactured by / American Mechanical Labs, Inc. / 285-7 N. Sixth Street / Brooklyn, N.Y. / U.S. Pat. Nos. 301710 - 414778 - 626741 - 655393 / and other patents pending." The device is ...
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Advertising Media: Television
Collection Interviewee: Murphy, W.B.Norris, AliceNorris, E. E.Prior, JosephMeehan, VincentaMercer, RichardMeyers, Peter H.Mulcahy, PaulWelsh, DickCollection ...
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R. Gordon McGovern
Collection Interviewee: Murphy, W.B.Norris, AliceNorris, E. E.Prior, JosephMeehan, VincentaMercer, RichardMeyers, Peter H.Mulcahy, PaulWelsh, DickCollection ...
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Daniel T. Gearon
Collection Interviewee: Murphy, W.B.Norris, AliceNorris, E. E.Prior, JosephMeehan, VincentaMercer, RichardMeyers, Peter H.Mulcahy, PaulWelsh, DickCollection ...
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Campbell in the News
Collection Interviewee: Murphy, W.B.Norris, AliceNorris, E. E.Prior, JosephMeehan, VincentaMercer, RichardMeyers, Peter H.Mulcahy, PaulWelsh, DickCollection ...
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Dear Heart; Memories of Home
side R: Venetian Quartet. Memoris of Home; side L: Venetian Trio. Dear Heart (Edison 50061). 80 rpm. Side R was recorded in 1912. Side L was recorded in 1914.
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Trombone Cholly; Yellow Dog Blues
Bessie Smith and her Blue Boys. side 1: Trombone Charlie; side 2: Yellow Dog Blues (Parlophone R 2480). 78 rpm. Side 1 was originally recorded in 1927 and released on Columbia 14232-D. Side 2 was ...
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Crosley "Pup" radio receiver
Marked: "Crosley / Pup". Bottom plate missing. A regenerative detector using a single UV-201A tube (broken), and a 2 megohm grid-leak resistor affixed to side of frame. Unit has binding posts for ...