| Digest Nr | Subject and Author |
|---|
 |
| 2019.06.04.01 | QRS Upgrading To Laser Perforating Music Rolls, from Mike Walter |
| 2014.07.02.02 | Upgrading Roy Norman "System Gavioli" Organ, from Mike Jardin |
| 2013.07.15.01 | Upgrading the PianoDisc System, from Rick Inghram |
| 2013.04.12.02 | Upgrading 116-note Rolls to 176-note Duo-Art, from Bob Taylor |
| 2013.04.07.04 | Upgrading 116-note Rolls to 176-note Duo-Art, from Bob Taylor |
| 2010.07.12.02 | Upgrading a Yamaha Disklavier Mark II, from Don Teach |
| 2010.07.11.01 | Upgrading A Yamaha Disklavier Mark II, from Benjamin T. Riddles |
| 2007.08.25.04 | Upgrading the PianoDisc PDS-128 Solenoid Player, from Richard Lounsbury |
| 2006.02.16.10 | Upgrading the PianoDisc PDS-128 Solenoid Player, from John Dewey |
| 2006.02.14.05 | Upgrading the PianoDisc PDS-128 Solenoid Player, from Peter Phillips |
| 2006.02.13.03 | Upgrading the PianoDisc PDS-128 Solenoid Player, from Nick Klosz |
|
