| Digest Nr | Subject and Author |
|---|
 |
| 2020.11.13.02 | Aeolian 65n & 88n Piano Roll Numbering, Part 2, from Julian Dyer |
| 2020.11.12.03 | Aeolian 65n & 88n Piano Roll Numbering, Part 1, from Julian Dyer |
| 2020.11.10.02 | Aeolian Co. Roll Numbering Systems, from Julian Dyer |
| 2020.11.10.01 | Duo-Art Roll Numbering Systems, from Skip Klosz |
| 2020.11.08.01 | Duo-Art & Aeolian Co. Roll Numbering Systems, from Marc Goodman |
| 2007.09.26.01 | Musical Box Disc Numbering, from Kevin McElhone |
| 2003.05.26.09 | Numbering Piano Keys, from Bryan Cather |
| 2000.02.22.08 | Duo-Art Roll Numbering, from Brian Chesters |
| 1998.08.10.04 | US Music Roll Numbering Scheme, from Frank Himpsl |
| 1997.03.11.13 | Mills Violano Roll Numbering, from Dick Hack |
|
