| Digest Nr | Subject and Author |
|---|
 |
| 2002.02.28.02 | Total Pianos in US, from Meta Brown |
| 2002.02.27.03 | Total Pianos In USA, from Terry Dolan |
| 2001.07.14.02 | Total Surviving Roll-Playing Pianos, from Lee Munsick |
| 2001.07.13.01 | Total Surviving Roll-Playing Pianos, from John A. Tuttle |
| 2001.07.11.07 | Total Production of Player Pianos, from Julian Dyer |
| 2001.07.10.03 | Total Production of Player Pianos, from Tim Mattice |
| 2001.07.07.05 | Total Production of Player Pianos, from Gabe Della Fave |
| 2001.07.06.04 | Total Production of Player Pianos, from John A. Tuttle |
|
