| Digest Nr | Subject and Author |
|---|
 |
| 2009.04.13.09 | List of Music Roll Manufacturing Companies, from Horacio Asborno |
| 2009.04.12.02 | Seek List of Music Roll Manufacturing Companies, from Andri Maimaridou |
| 2006.10.09.04 | What Companies Made Player Pipe Organ Rolls?, from Tom Hutchinson |
| 2004.01.19.02 | Seek History of Piano Roll Companies, from Stephen Simpson |
| 2000.04.26.02 | Carpenter Organ Companies, from Tom DeLay |
| 1997.12.29.09 | Links to Piano Roll Companies, from Tim Baxter |
| 1997.12.28.10 | Piano Roll Companies, from Karl Ellison |
| 1997.12.25.09 | Piano Roll Companies, from Peter Braun |
| 1997.12.23.09 | Seek Piano Roll Companies, from Beth Ann Carter |
| 1997.07.12.06 | Roll Companies in Good Old New Jersey, from Frank Himpsl |
| 1997.07.09.04 | Roll Companies in Good Old New Jersey, from Frank Himpsl |
|
