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File:Vienna - Hupfeld Phonoliszt Violina Automatic piano and 3 violin machine music player - 0112.jpg - Wikimedia Commons
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Automatic Pianos: A Collector's Guide to the Pianola, Barrel Piano, & Aeolian Orchestrelle: Ord-Hume, Arthur W. J. G.: 9780764320248: Amazon.com: Books
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