| Digest Nr | Subject and Author |
|---|
 |
| 2014.04.27.03 | Duo-Art 5-position Modify Switch, from Bill Chapman |
| 2006.03.27.17 | Ampico A Modify Switch Tubing Connections, from Bob Hunt |
| 2006.03.27.16 | Ampico A Modify Switch, from Bruce Clark |
| 2006.03.26.03 | Ampico A Modify Switch, from Rob Buckingham |
| 2004.01.16.06 | Computer Program to Modify MIDI Velocity, from Spencer Chase |
| 2001.01.26.07 | Ampico Modify Switch, from Ed Gaida |
| 1999.01.07.16 | Pamphlet "How to Modify Accordions" at PPCo, from Art Reblitz |
| 1999.01.07.15 | Pamphlet "How to Modify Accordions", from Michael Woolf |
|
