MMD Archives April 2020 Contents of Digest 2020.04.03 Prev  Next Nr Subject Author 01 Recommended Music Discs for 27" Regina Don Rudee 02 Patrick Wrasse West Coast Instrument Moving Trip Dave Krall 03 Seek 1960s Kimball Electric Motor-Transmission Jere DeBacker 04 Protecting Music Roll Reader Contacts Mark Kinsler 05 Mills Violano DC Polarity Switch David Evans