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File:Vintage Radiola 60 Table Radio (Inside View), AM Band, 9 Tubes, Two-Toned Walnut Veneered Cabinet, Requires An External Speaker, Made In USA, Circa 1928 - 1929 (32947310203).jpg - Wikimedia Commons
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File:Vintage RCA Radiola 18 AC AR-936 Wood Radio, TRF Without Reaction (Non Regenerative), AM Band Only, Requires External Speaker, 7 Tubes, Made In USA, Circa 1928 (25329692606).jpg - Wikimedia Commons
File:Radiola Superheterodyne Radio Receiver with Loop Antenna and speaker horn, Rca, 1924 - National Electronics Museum - DSC00052.JPG - Wikimedia Commons
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