| Digest Nr | Subject and Author |
|---|
 |
| 2023.08.14.01 | Seek Imperator 53 cm Spring-motor, from Rudi Zukowski |
| 2023.03.29.01 | Seek Imperator 53 cm Spring-motor, from Doug Wiggins |
| 2023.03.22.01 | Seek Imperator 53 cm Spring-motor, from Rudi Zukowski |
| 2021.10.25.01 | Barrel Piano Spring-motor Performance, from Jim Katz |
| 2021.10.17.01 | Barrel Piano Spring-motor Performance, from Mark Singleton |
| 2015.09.09.01 | 28-note "Automatic Harmonica" With Spring-motor, from Harold Draper |
| 2010.06.12.04 | Rebuilding Melville Clark Spring-motor Player, from Bruce Mercer |
| 2010.06.12.03 | Rebuilding Melville Clark Spring-motor Player, from Jere DeBacker |
| 2010.06.11.01 | Rebuilding Melville Clark Spring-motor Player, from Bruce Mercer |
| 2010.06.09.03 | Rebuilding Melville Clark Spring-motor Player, from Jere DeBacker |
| 2010.06.08.04 | Rebuilding Melville Clark Spring-motor Player, from Craig Roothoff |
| 2010.06.07.06 | Rebuilding Melville Clark Spring-motor Player, from Bill Maguire |
| 2005.01.20.06 | Replacement Spring for Spring-Motor, from Mark Singleton |
| 2005.01.19.04 | Replacement Spring for Spring-Motor, from Bill Wineburgh |
| 2005.01.18.05 | Seek Replacement Spring for Spring-Motor, from Wolfgang Brommer |
| 1997.10.07.13 | Repairing the Spring-motor, from Beatrice Robertson |
| 1997.10.07.12 | Repairing the Spring-motor, from A. B. Bonds |
| 1997.10.07.11 | Repairing the Spring-motor, from Nancy Fratti |
| 1997.10.07.10 | Safety and Repairing the Spring-motor, from Mike Knudsen |
| 1997.09.07.07 | Seek Spring-Motor Repair Shop, from Mark Merrill |
| 1997.02.15.28 | Pianola Spring-Motor, from Michael Waters |
|
