| Digest Nr | Subject and Author |
|---|
 |
| 2025.07.16.01 | Seek Antique Bryant Center Hole Mount Receptacle, from Dave Krall |
| 2018.11.30.02 | Hole In The Sound Board, from Grahame Code |
| 2014.10.10.04 | Player Piano Roll Hole Shape, from Jack M. Conway |
| 2014.10.08.03 | Player Piano Roll Hole Shape, from Art Reblitz |
| 2012.01.14.04 | Source of PPCo Piano Roll Hole Punch, from Don Teach |
| 2012.01.12.06 | Seek PPCo Piano Roll Hole Punch, from Paul Horgan |
| 2010.07.23.06 | Piano Roll Hole Punch, from Hi Babit |
| 2010.07.23.05 | Piano Roll Hole Punch, from Matthew Caulfield |
| 2010.07.23.04 | Piano Roll Hole Punch, from Spencer Chase |
| 2010.07.22.15 | Seek Piano Roll Hole Punch, from Tom Hutchinson |
| 2008.12.20.04 | Feeder Hole Diameter in Pressure Roller Organs, from Todd Augsburger |
| 2006.12.29.01 | Music Roll Hole Dimensions, from Doug Anderson |
| 2005.08.30.02 | Polyphon 11-inch Discs With Single Driving Hole, from Joe Berman |
| 2004.10.15.05 | Wurlitzer & Philipps Tracker Bar Hole Spacing, from Art Reblitz |
| 2004.04.30.02 | Music Roll Spools With Square Drive Hole, from Richard Vance |
| 2003.09.28.07 | Hole Spacing of Wurlitzer APP Tracker Bar, from Julie Porter |
| 2003.09.13.07 | Hole Spacing of Wurlitzer APP Tracker Bar, from Don Teach |
| 2003.09.12.08 | Hole Spacing of Wurlitzer APP Tracker Bar, from Bob Billings |
| 2003.03.06.02 | Piano Rolls With Square Drive Hole in Flange, from Christofer Noering |
| 2003.03.05.05 | Piano Rolls With Square Drive Hole in Flange, from Christofer Noering |
| 2003.03.05.04 | Piano Rolls With Square Drive Hole in Flange, from Nicholas Simons |
| 2003.03.04.07 | Piano Rolls With Square Drive Hole in Flange, from Tom Hawthorn |
| 2003.02.08.09 | Hole Diameter of T-100 Red Welte Music Roll, from Bob Billings |
| 2002.07.01.09 | Small Hole Brass Bleed Cups, from Richard Vance |
| 2002.07.01.08 | Small Hole Brass Bleed Cups, from Craig Brougher |
| 2002.06.30.04 | Seek Small Hole Brass Bleed Cups, from Joyce Brite |
| 2002.06.13.01 | Two Row Tracker Bar Hole Spacing, from Jim Crank |
| 2000.08.21.05 | Narrow QRS Roll with Square Drive Hole, from Jeff Lofton |
| 1999.02.13.03 | 49-Key Marenghi of Wookey Hole Caves, Somerset, from Jeremy Brice |
| 1999.02.06.03 | 49-Key Marenghi of Wookey Hole Caves, Somerset, from Tim Blyth |
| 1998.10.12.06 | Tracker Bar Hole Sizes, from Jeremy Brice |
| 1998.10.11.04 | Tracker Bar Hole Size, from Tom Griffith |
| 1997.08.20.15 | Hole Size Affects Response Time, from Bob Billings |
| 1996.11.30.04 | Trackerbar hole distances, from Craig Brougher |
|
