| Digest Nr | Subject and Author |
|---|
 |
| 2007.12.04.06 | Motora & Motor Player Corp. Aren't the Same, from Spencer Chase |
| 2003.02.13.07 | Bigger Pianos Aren't Always Better Pianos, from Randolph Herr |
| 2003.02.11.10 | Bigger Pianos Aren't Always Better Pianos, from Douglas Henderson |
| 1999.05.20.13 | Art-Echo Rolls Aren't Similar to Ampico, from Dean Randall |
| 1997.12.15.08 | Player Pianos Aren't Computers, from Peter Neilson |
| 1997.12.14.13 | Player Pianos Aren't Computers, from Peter Coggins |
| 1997.09.07.10 | Ampico Mechanisms Aren't Interchangeable, from Bob Conant |
|
