| Digest Nr | Subject and Author |
|---|
 |
| 2012.02.05.03 | Long-Play Ampico Rolls Sometimes Stop Moving, from George Wilder |
| 2011.07.05.05 | Seek Duo-Art Long-play Electric Top Action, from Bruce Grimes |
| 2011.01.27.03 | Rubber Tires for Duo-Art Long-play Top Action, from Bruce Grimes |
| 2009.12.07.05 | Duo-Art Pianos for Long-Play Jumbo Rolls, from Bruce Grimes |
| 2009.12.06.04 | Duo-Art Pianos for Long-Play Jumbo Rolls, from Craig Roothoff |
| 2005.12.19.04 | Duo-Art Pianos for Long-Play Jumbo Rolls, from Bill Chapman |
| 2005.12.18.08 | Duo-Art Pianos for Long-Play Jumbo Rolls, from Ray Bauer |
| 2005.12.17.05 | Duo-Art Pianos for Long-Play Jumbo Rolls, from Bruce Grimes |
| 2005.07.27.11 | Duo-Art Electric Long-Play Cone Roll Drive, from Bruce Grimes |
| 1998.07.01.11 | QRS Long-play Rolls (Reproducing Organ Rolls), from Kelly Goodman |
|
