| Digest Nr | Subject and Author |
 |
| 2021.07.13.02 | Proper Playing Tempo of Piano Rolls, from Fred Martin |
| 2021.07.11.02 | Proper Playing Tempo of Piano Rolls, from Fred Martin |
| 2015.03.05.02 | Seminar " Proper Attitude Toward the Player", from Paul Johnson |
| 2014.06.23.03 | Proper Shelving for An Old Piano Roll Cabinet, from Bob Hodge |
| 2013.07.23.07 | Proper Suction When Testing Valve Travel, from Joel Cluskey |
| 2008.11.16.02 | Learning Proper Restoration Skills, from Craig Roothoff |
| 2008.11.11.01 | Learning Proper Restoration Skills, from Eliyahu Shahar |
| 2008.11.09.07 | Learning Proper Restoration Skills, from Bruce Clark |
| 2008.11.08.05 | Learning Proper Restoration Skills, from Brenton Jenkins |
| 2008.11.08.04 | Learning Proper Restoration Skills, from Bob Stewart |
| 2008.11.07.05 | Learning Proper Restoration Skills, from John A. Tuttle |
| 2008.11.06.02 | Learning Proper Restoration Skills, from Matthew Caulfield |
| 2006.02.18.06 | Proper Hammers for Player Pianos, from Jurgen Goering |
| 2006.02.18.05 | Proper Hammers for Player Pianos, from Jon Page |
| 2006.02.17.05 | Proper Hammers for Player Pianos, from Jason Fisher |
| 2005.09.12.07 | Proper Side to Repair Music Roll Paper, from Larry Norman |
| 2005.09.10.04 | Proper Side to Repair Music Roll Paper, from Duaine Hechler |
| 2003.10.22.07 | Proper Finish For Reproduco Piano-Organ, from Bill Koenig |
| 2002.11.26.13 | Proper Piano Key Weight, from Jon Page |
| 2002.11.26.12 | Proper Piano Key Weight, from Larry Lobel |
| 2002.11.25.13 | Proper Piano Key Weight, from Lucian Popescu |
| 2000.03.21.15 | Proper Restorations, from Craig Brougher |
| 1997.01.13.06 | Listing Proper Names, from Fritz Gellerman |
| 1996.06.09.02 | Re: Proper Restoration, from Bob Conant |
| 1996.06.07.05 | Re: Proper Restoration, from Philip Jamison |
 |