MMD Archives February 2017 Contents of Digest 2017.02.10 Prev  Next Nr Subject Author 01 John McTammany Documentary on BBC History Channel Gregory Filardo 02 Source of Tanzbär 28-note Music Rolls Mike Perry 03 Source of Tanzbär 28-note Music Rolls Brian Thornton 04 Mechanical Instruments: Custody and Planning Ian Gillis 05 Ampico 'A' Function Switches John A. Tuttle 06 Summary of Research on Steger Action Luke Myers 07 Extra Holes in Ampico B Tracker Bar Bill Budenholzer 08 Extra Holes in Ampico B Tracker Bar Luke Myers 09 Extra Holes in Ampico B Tracker Bar Ed Gaida 10 Extra Holes in Ampico B Tracker Bar Austin Matlow 11 Extra Holes in Ampico B Tracker Bar Mike Walter