| Digest Nr | Subject and Author |
|---|
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| 2021.04.30.03 | Mystery Tool du Jour, from John Grant |
| 2020.03.07.01 | "Great Piano Roll Mystery" 1962 BBC Radio, from Julian Dyer |
| 2020.03.04.03 | "Great Piano Roll Mystery" 1962 BBC Radio, from Dave Krall |
| 2020.03.04.02 | "Great Piano Roll Mystery" 1962 BBC Radio, from Alan Whytock |
| 2020.03.01.01 | "Great Piano Roll Mystery" 1962 BBC Radio, from David Krall |
| 2019.12.24.03 | Mystery Pianist at Piano Store, from Mark Kinsler |
| 2017.12.20.04 | Duo-Art Fan-Accordion System Mystery, from Bill Koenigsberg |
| 2017.12.06.04 | Duo-Art Fan-Accordion System Mystery, from Bill Koenigsberg |
| 2017.05.20.05 | Mystery Jig, from John Grant |
| 2016.09.30.01 | Wurlitzer Style SA Action Mystery, from Michael Clemens |
| 2015.09.26.03 | Mystery of the Missing Ampico Intensity, from John Grant |
| 2015.09.24.07 | Mystery of the Missing Ampico Intensity, from Mike Walter |
| 2015.09.24.06 | Mystery of the Missing Ampico Intensity, from Lester Wolff |
| 2015.09.24.05 | Mystery of the Missing Ampico Intensity, from Bob Taylor |
| 2015.09.23.04 | Mystery of the Missing Ampico Intensity, from John Grant |
| 2015.07.28.01 | Asbury Park Palace Amusements Mystery Organ, from Phil Wood |
| 2014.05.20.04 | Mystery Bruder Organ at Buckroe Beach Carousel, from Dave Haibach |
| 2014.05.19.03 | Mystery Bruder Organ at Buckroe Beach Carousel, from Will Eley |
| 2014.05.15.06 | Mystery Bruder at Buckroe Beach, from Will Eley |
| 2012.11.25.01 | Marvel Mystery Roll, from Bob Billings |
| 2011.03.25.02 | Seek Titles on Capitol A-1163 " Mystery Rag Roll", from Ron McUne |
| 2009.04.13.10 | Upright Ampico B Pedal Regulator Mystery, from Bruce Clark |
| 2009.04.12.03 | Upright Ampico B Pedal Regulator Mystery, from Bob Stewart |
| 2009.04.03.05 | The QRS Roll Label Mystery, from Douglas Henderson |
| 2008.06.07.05 | Mystery Duo-Art Roll, from John Taber |
| 2008.06.05.04 | Half Duo-Art Mystery Pallet Valves, from Julian Dyer |
| 2008.06.04.04 | Half Duo-Art Mystery Pallet Valves, from Randolph Herr |
| 2008.03.19.02 | Mystery Wooden Roller, from Craig Smith |
| 2007.09.24.05 | Mystery Play-Rite Ampico Rolls, from Larry Norman |
| 2007.09.23.08 | Mystery Barrel Organ, Part 2, from Dale Dohler |
| 2007.09.22.04 | Mystery Play-Rite Ampico Rolls, from Jim Heyworth |
| 2007.09.21.02 | Mystery Play-Rite Ampico Rolls, from John Del Carlo |
| 2007.09.16.02 | Mystery Barrel Organ, from Dale Dohler |
| 2007.09.01.06 | Penetrating Oil - Marvel Mystery Oil, from Doug Hershberger |
| 2006.11.11.02 | Mystery Organ at Palace Amusements, from Andrew Barrett |
| 2006.10.19.03 | Mystery Organ at Palace Amusements, from Bill Black |
| 2006.10.18.07 | Classical Music Mystery Organ at Palace Amusements, from Andrew Barrett |
| 2006.08.07.01 | Mystery Barrel Organ in Israel, from Eliyahu Shahar |
| 2006.08.04.01 | Mystery Roller Organ in Israel, from Vincent Morgan |
| 2005.11.17.05 | Mystery Player Piano Also Plays a Pipe Organ, from Greg Filardo |
| 2005.03.04.10 | Mystery Player Piano Action Stack Plays 65 Notes, from Paul Manganaro |
| 2005.03.01.11 | Mystery Player Piano Action Stack Plays 65 Notes, from Paul Manganaro |
| 2005.02.25.03 | Mystery Player Piano Action Stack Plays 65 Notes, from D. L. Bullock |
| 2005.02.23.08 | Mystery Player Piano Action Stack Plays 65 Notes, from Paul Manganaro |
| 2004.11.19.01 | New CD "The Welte-Mignon Mystery Vol. 1", from Gerhard Dangel |
| 2004.10.05.07 | Lubricants - Marvel Mystery Oil, from Spencer Chase |
| 2004.09.01.02 | Mystery 14-Note Player Pipe Organ, from Craig Smith |
| 2004.08.31.06 | Mystery 14-Note Player Pipe Organ, from Steve Cobb |
| 2004.08.29.07 | Mystery Fair Organ Plays Wurlitzer 165 Music Rolls, from Jack M. Conway |
| 2004.08.28.02 | Mystery Fair Organ Plays Wurlitzer 165 Music Rolls, from Jack M. Conway |
| 2004.08.10.04 | Mystery Fair Organ Plays Wurlitzer 165 Music Rolls, from Hans van Oost |
| 2004.08.04.03 | Mystery Fair Organ Plays Wurlitzer 165 Music Rolls, from Jack M. Conway |
| 2002.12.22.04 | Mystery Nickelodeon is Western Electric, from Don Teach |
| 2002.12.22.03 | Mystery Nickelodeon is Western Electric, from Andrew Barrett |
| 2002.12.07.10 | Mystery Nickelodeon, from Rich Allen |
| 2002.09.07.04 | Storlien Swedish Mystery Organ, from Peter Andersson |
| 2002.09.07.03 | Storlien Swedish Mystery Organ, from Johan Liljencrants |
| 2002.09.07.02 | Storlien Swedish Mystery Organ, from Peter Neilson |
| 2002.09.07.01 | Storlein Swedish Mystery Organ, from Karl Petersen |
| 2002.09.06.01 | Storlein Swedish Mystery Organ, from Philip Jamison |
| 2001.12.12.08 | Mystery Player Piano Sold By Keith Prowse, from D. L. Bullock |
| 2001.12.12.07 | Mystery Player Piano Sold By Keith Prowse, from Donald Dusenbury |
| 2001.12.12.06 | Mystery Player Piano Sold By Keith Prowse, from Hal Davis |
| 2001.12.11.05 | Mystery Player Piano Sold By Keith Prowse, from Denise Vrana |
| 2001.10.05.03 | QRS Roll CU-527 " Mystery Rag" Identified, from Frank Himpsl |
| 2001.04.09.09 | Steinway Ampicos & Rachmaninoff Mystery, from Mike Walter |
| 2001.01.19.07 | Mystery Orchestrion Music Roll, from Matthew Caulfield |
| 2000.07.14.07 | Mystery Tune - "Streets of Cairo", from Albert Petrak |
| 2000.07.14.06 | Mystery Tune - "Streets of Cairo", from Karl Petersen |
| 2000.07.14.05 | Mystery Tune - The Hootchie Kootchie Dance, from Hal Davis |
| 2000.07.14.04 | Mystery Tune - The Hootchie Kootchie Dance, from Randolph Herr |
| 2000.07.13.06 | Mystery Tune Words, from Albert Petrak |
| 2000.03.15.07 | Red Gum, The Mystery Player Piano Wood, from Mike Kitner |
| 2000.02.29.07 | Mystery Wood Type in Player Piano Actions, from Mike Kitner |
| 2000.02.29.06 | Mystery Wood Type in Player Piano Actions, from Brian Smith |
| 2000.02.28.14 | Mystery Wood Type in Player Piano Actions, from Mike Kitner |
| 1999.09.02.03 | Mystery Orchestrion at Disneyland & Coinola C2, from Andrew Barrett |
| 1999.03.17.07 | Mystery 'O' Roll, from Ed Sprankle |
| 1999.03.15.06 | Mystery O-roll is Composite O-113, from Bill Masterman |
| 1999.03.15.05 | Mystery O-roll Is O-113, from Matthew Caulfield |
| 1999.03.14.06 | Mystery 'O' Roll, from Peter Coggins |
| 1999.03.05.12 | Mystery O-roll May Be Incorrectly Spooled, from Don Teach |
| 1998.11.01.07 | Mystery Roll in RealAudio, from Gabe Della Fave |
| 1998.09.01.10 | Mystery 12-tune A-roll, from Hal Davis |
| 1998.08.31.11 | Mystery 12-tune A-roll, from John Farrell |
| 1998.08.19.15 | Mystery Steck Pianola in Brussels, from Dan Wilson, London |
| 1998.08.19.11 | Marvel Mystery Oil & Teflon Powder, from Philip Jamison |
| 1998.08.18.20 | Marvel Mystery Oil for Rebuilt Air Motor, from John A. Tuttle |
| 1998.03.03.12 | Mystery Leakage in Air-Motor, from John A. Tuttle |
| 1998.01.21.08 | The Mystery of Hawaiian Piano Rolls, from Joyce Brite |
| 1998.01.10.04 | Mystery 65-note Universal Music Rolls, from Richard Vance |
| 1998.01.09.14 | Mystery 65-note Universal Music Rolls, from Carl Kehret |
| 1997.11.13.16 | Duo-Art Cross Valve Replacement Mystery Solved, from Craig Brougher |
| 1997.05.30.04 | Mystery Rolls, from Ken Vinen |
| 1996.09.24.12 | Identify Mystery Piano, from Dave Fowler |
| 1996.09.24.11 | Empeco Mystery Solved?, from John Phillips |
| 1996.06.21.08 | Mystery Rolls, from Larry Fisher |
| 1996.06.20.03 | Mystery Rolls, from John Phillips |
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