| Digest Nr | Subject and Author |
|---|
 |
| 2021.07.13.01 | Extended Perforations In Ampico Rolls, from Craig Sander |
| 2020.12.12.02 | Pianola Repeats Chained Note Perforations, from Joel Cluskey |
| 2020.12.04.02 | Pianola Repeats Chained Note Perforations, from John Grant |
| 2020.11.29.02 | Pianola Repeats Chained Note Perforations, from Mark J. Labancz |
| 2020.11.28.04 | Pianola Repeats Chained Note Perforations, from Julian Dyer |
| 2020.11.27.04 | Pianola Repeats Chained Note Perforations, from Marc Goodman |
| 2020.11.27.03 | Pianola Repeats Chained Note Perforations, from Bernt Damm |
| 2020.11.26.05 | Pianola Repeats Chained Note Perforations, from John Grant |
| 2020.11.25.05 | Pianola Repeats Chained Note Perforations, from Doug Bullock |
| 2020.11.23.03 | Pianola Repeats Chained Note Perforations, from Joel Cluskey |
| 2018.10.08.06 | Aeolian "Snake Bite" Accent Perforations, from Dave Krall |
| 2017.06.15.02 | Artrio-Angelus Offset Perforations, from Paul Rumpf |
| 2017.06.05.01 | Artrio-Angelus Offset Perforations, from Robbie Rhodes |
| 2017.06.03.04 | Artrio-Angelus Offset Perforations, from Wayne Stahnke |
| 2013.04.12.05 | Pianola Repeats Chained Note Perforations, from John Taber |
| 2013.04.10.05 | Pianola Repeats Chained Note Perforations, from Jim Spriggs |
| 2012.01.13.01 | Edge Perforations on Supertone Roll, from Dale Dohler |
| 2011.06.30.05 | Extended Perforations In Ampico Rolls, from Bruce Grimes |
| 2011.06.28.05 | Extended Perforations In Ampico Rolls, from Bob Smith |
| 2007.03.12.06 | Duo-Art Test Rolls & Accent Perforations, from Randolph Herr |
| 2004.05.22.06 | Faulty Perforations In Nickelodeon Rolls, from Don Teach |
| 2004.05.22.05 | Faulty Perforations In Nickelodeon Rolls, from Ed Gaida |
| 2002.03.13.05 | Music Rolls With Extra Perforations At Edges, from Jeff Bridges |
| 1998.05.30.03 | Chain Perforations, from John Farrell |
|
