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A true mirror of sound : Bettini micro-phonograph, micro-diaphragms for phonograph and graphophone, Bettini celebrated "opera musical records" and autograph-records of world famous artists (1900)

Bettini Phonograph Laboratory · New York : Bettini Phonograph Laboratory · leaf 12

An illustration from A true mirror of sound : Bettini micro-phonograph, micro-diaphragms for phonograph and graphophone, Bettini celebrated "opera musical records" and autograph-records of world famous artists, 1900, leaf 12
COMPLETE OUTFIT WITH COLUMBIA GRAPHOPHONE (Type AT). Columbia Graphophone (Type A T) with Bettini Micro-Repro¬ ducer (N t) and Reproducing- Horn No. i.$43.00 Columbia Graphophone (Type A T) with Bettini Micro-Repro¬ ducer (P t) and Reproducing Horn No. 5.$38.50 COMPLETE OUTFIT WITH EAGLE. Eagle…

Trade catalogs · Sound recordings · Phonograph · Bettini Phonograph Laboratory

Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.

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