MMD Archives January 2018 Contents of Digest 2018.01.20 Prev  Next Nr Subject Author 01 15.5" Polyphon Musical Box Discs on YouTube Jochen Schäfer 02 Polyphon Disc Restoration Mark Buckland 03 Unknown Phonoliszt Violina Roll Rick Crandall 04 Regulating the Ampico A Bill Luecht