| Digest Nr | Subject and Author |
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| 2024.09.16.01 | Seek Simplex "Fishing Pole" Tracking Mechanism, from Piotr Barcz |
| 2020.11.30.01 | Seek 4-holes Tracking System Brass Tracker Bar, from Dave Krall |
| 2020.11.25.06 | Roll Tracking System During Rewind, from Don Teach |
| 2020.11.24.02 | Roll Tracking System During Rewind, from Dave Krall |
| 2020.04.14.02 | Poor Roll Tracking On Pedal-Electric Duo-Art, from Robert Howard |
| 2019.09.08.05 | Seeburg Roll Tracking Problem, from Wayne Finger |
| 2019.08.31.01 | Seeburg Roll Tracking Problem, from Arlie Rauch |
| 2019.08.06.04 | Seek Straube Tracking Mechanism Information, from Dan Harrett |
| 2019.07.13.03 | Player piano tracking problem, from Jim Neher |
| 2019.07.13.02 | Player Piano Tracking Problem, from Paul Camps |
| 2019.07.13.01 | Player Piano Tracking Problem, from Bruce Clark |
| 2019.07.08.02 | Player Piano Tracking Problem, from Jeff Davis |
| 2019.07.08.01 | Player Piano Tracking Problem, from Candy Hawblitz |
| 2019.07.05.01 | Player Piano Tracking Problem, from Jim Neher |
| 2018.12.18.05 | Pratt-Read Player Action Tracking Mechanisms, from John Rutoskey |
| 2018.08.13.07 | Adjusting Aeolian Two-Ear Roll Tracking System, from John Grant |
| 2018.08.10.06 | Adjusting Aeolian Two-Ear Roll Tracking System, from John A. Tuttle |
| 2018.08.09.04 | Adjusting Aeolian Two-Ear Roll Tracking System, from John Grant |
| 2018.08.09.03 | Adjusting Aeolian Two-Ear Roll Tracking System, from Don Teach |
| 2018.08.08.02 | Adjusting Aeolian Two-Ear Roll Tracking System, from Luke Myers |
| 2018.04.07.03 | Tracking Down Tune Information, from Richard Dutton |
| 2018.04.07.02 | Tracking Down Tune Information, from Nancy Fratti |
| 2018.04.06.01 | Need Help Tracking Down Tune Information, from Clay Witt |
| 2017.11.14.02 | Hose Connections on Weber Roll Tracking System, from Roger van der Kruk |
| 2017.06.17.08 | Jesse French String Driven Tracking Mechanism, from John Grant |
| 2017.06.17.07 | Jesse French String Driven Tracking Mechanism, from David Dewey |
| 2017.06.16.04 | Seek Aeolian Tracking Arm, from Ben Ely |
| 2017.06.16.02 | Jesse French String Driven Tracking Mechanism, from Scotty Greene |
| 2017.01.09.08 | FS Free: 4-port Tracking System Valve Assembly, from Ray Fairfield |
| 2017.01.08.03 | Installing British Aeolian 4-port Tracking System, from Gary Crawford |
| 2016.10.25.06 | M. Schulz Roll Tracking System, from Bill Luecht |
| 2016.08.18.03 | M. Schulz Roll Tracking System, from Matthew Schultz |
| 2016.08.09.03 | Mechanical Tracking System in Robert Loud Player, from Mike Walter |
| 2016.07.05.05 | Early Duo-Art Roll Tracking Problem, from David Sharpe |
| 2016.05.30.07 | Early Duo-Art Roll Tracking Problem, from Art Reblitz |
| 2016.05.29.05 | Early Duo-Art Roll Tracking Problem, from Thomas Ahearn |
| 2016.05.29.04 | Early Duo-Art Roll Tracking Problem, from John Grant |
| 2016.05.28.03 | Early Duo-Art Roll Tracking Problem, from D. L. Bullock |
| 2016.05.26.10 | Regulating the Music Roll Tracking System, from John Grant |
| 2016.05.25.11 | Provenance, Roll Tracking & Motor Value, from David Dewey |
| 2016.05.25.10 | Early Duo-Art Roll Tracking Problem, from Don Teach |
| 2016.05.25.09 | Early Duo-Art Roll Tracking Problem, from Jeffrey R. Wood |
| 2016.05.25.08 | Early Duo-Art Roll Tracking Problem, from Jeff Davis |
| 2016.05.24.11 | Early Duo-Art Roll Tracking Problem, from David Sharpe |
| 2016.04.28.05 | Ampico Upright Tracking Linkage Installation, from Jamie Brewer |
| 2016.04.22.05 | Ampico Upright Tracking Linkage, from Don Teach |
| 2016.04.21.03 | Seek Ampico Upright Tracking Linkage, from Jamie Brewer |
| 2016.01.03.02 | Simplex Automatic Roll Tracking Mechanism Cord, from Pat DeWitt |
| 2016.01.02.02 | Simplex Automatic Roll Tracking Mechanism, from David Dewey |
| 2016.01.01.02 | Simplex Automatic Roll Tracking Mechanism, from Gilles Chouinard |
| 2015.12.31.03 | Simplex Automatic Roll Tracking Mechanism, from David Dewey |
| 2015.12.30.02 | Simplex Automatic Roll Tracking Mechanism, from Stanley Morton |
| 2015.09.24.04 | Springs for Duo-Art Tracking Ears, from Spencer Chase |
| 2015.09.22.04 | Seek Springs for Duo-Art Tracking Ears, from Tony Marsico |
| 2014.12.30.06 | Schulz Roll Tracking System, from Matthew Schultz |
| 2014.12.08.04 | Seek Tracking Cam for Standard Spool Frame, from John A. Tuttle |
| 2013.05.11.04 | Mills Violano Virtuoso Roll Tracking Adjustment, from Scotty Greene |
| 2012.04.02.06 | Nickelodeon Roll Tracking, from John A. Tuttle |
| 2012.04.01.05 | Steinway Duo-Art Roll Tracking, from Pat DeWitt |
| 2012.02.23.02 | Brand "Fishing Pole" Tracking Mechanism, from Bob Coon |
| 2011.10.13.04 | Seek Gulbransen Tracking Mechanism "Fishing Pole", from Ken Marts |
| 2011.07.27.08 | "Gulbransen" Fishing-Pole Tracking Mechanism, from John A. Tuttle |
| 2011.07.26.07 | Gulbransen "Fishing Pole" Tracking Mechanism, from Robert Perry |
| 2011.07.25.13 | Gulbransen "Fishing Pole" Tracking Mechanism, from Paul Brennan |
| 2011.07.25.12 | Brand "Fishing Pole" Tracking Mechanism, from David Sharpe |
| 2011.07.24.09 | "Fishing Pole" Tracking Mechanism in Duo-Art, from David Oppenheim |
| 2011.07.23.10 | Gulbransen "Fishing Pole" Tracking Mechanism, from John A. Tuttle |
| 2011.07.23.09 | H. C. Bay "Fishing Pole" Tracking Mechanism, from William McKeown |
| 2011.07.22.11 | Gulbransen "Fishing Pole" Tracking Mechanism, from Douglas Heckrotte |
| 2011.07.21.09 | Gulbransen "Fishing Pole" Tracking Mechanism, from John A. Tuttle |
| 2010.10.13.05 | Steinway Duo-Art Roll Tracking `, from Randolph Herr |
| 2010.10.13.04 | Steinway Duo-Art Roll Tracking, from Tockhwock |
| 2010.10.13.03 | Steinway Duo-Art Roll Tracking, from Al Pebworth |
| 2010.10.13.02 | Steinway Duo-Art Roll Tracking, from Dick Merchant |
| 2010.10.12.13 | Steinway Duo-Art Roll Tracking, from Pat DeWitt |
| 2010.03.17.01 | Autopiano 4-Pneumatic Tracking System, from Bill McKeown |
| 2010.03.15.01 | Baldwin Manualo With 4-hole Roll Tracking System, from Jeffrey Sanders |
| 2010.02.20.03 | Seek Air-O-Player Tracking Device, from Greg Graham |
| 2010.01.28.09 | Duo-Art Tracking System Problem, from Mark Greisen |
| 2010.01.27.05 | Duo-Art Tracking System Problem, from Dan Wilson |
| 2009.11.16.04 | Aeolian Tracking System Vacuum Supply, from Dan Harrett |
| 2009.09.13.03 | Duo-Art Roll Tracking Problem & Alignment, from Eric Shoemaker |
| 2009.09.11.13 | Duo-Art Roll Tracking Problem, from Roy Matson |
| 2009.09.11.12 | Duo-Art Roll Tracking Problem, from Pete Knobloch |
| 2009.09.11.11 | Duo-Art Roll Tracking Problem, from Bruce Grimes |
| 2009.09.11.10 | Duo-Art Roll Tracking Problem, from Tom Hutchinson |
| 2009.09.11.09 | Duo-Art Roll Tracking Problem, from Dick Merchant |
| 2009.09.10.07 | Duo-Art Roll Tracking Problem, from Bill Chapman |
| 2009.09.10.06 | Duo-Art Roll Tracking Problem, from Joel Cluskey |
| 2009.09.09.01 | Duo-Art Roll Tracking Problem, from Andy Ott |
| 2009.05.11.07 | Aeolian Tracking Control Valve Block, from Jeffrey R. Wood |
| 2009.05.10.09 | Seek Aeolian Tracking Control Valves Box, from Joe Taylor |
| 2009.05.04.06 | Adjusting Upright Ampico A Roll Tracking System, from Bill Luecht |
| 2009.05.03.06 | Adjusting Upright Ampico A Roll Tracking System, from Bill Chapman |
| 2009.05.02.03 | Adjusting Upright Ampico A Roll Tracking System, from Pat DeWitt |
| 2009.04.29.06 | Adjusting Upright Ampico A Roll Tracking System, from Pat DeWitt |
| 2008.11.10.01 | British Aeolian Music Roll Tracking System, from Bill McKeown |
| 2008.11.07.10 | British Aeolian Music Roll Tracking System, from James Black |
| 2008.11.06.12 | British Aeolian Music Roll Tracking System, from Gary Crawford |
| 2008.10.30.02 | Roll Tracking System Fingers, from Jeffrey R. Wood |
| 2008.10.28.05 | Aeolian Roll Tracking System Valves, from John Farmer |
| 2008.10.28.04 | Seek Roll Tracking System Fingers, from Steve Marx |
| 2008.10.21.08 | Aeolian Roll Tracking System Valves, from Paddy Handscombe |
| 2008.10.20.04 | Aeolian Roll Tracking System Valves, from John Farmer |
| 2008.10.12.02 | Single-Finger Music Roll Tracking System, from Mike Morrey |
| 2008.10.10.03 | Single-Finger Music Roll Tracking System, from Marc Goodman |
| 2008.10.09.01 | Single-Finger Music Roll Tracking System, from Mike Morrey |
| 2008.06.18.05 | Seek Simplex String Tracking System Parts, from Wilbur Herr |
| 2007.10.12.04 | Aeolian Roll Tracking System Modifications, from Bruce Grimes |
| 2007.10.12.03 | Aeolian Roll Tracking System Adjustment, from John Phillips |
| 2007.10.11.08 | Aeolian Roll Tracking System Adjustment, from Jeffrey R. Wood |
| 2007.10.10.05 | Aeolian Roll Tracking System Adjustment, from Andy Hood |
| 2007.05.09.04 | Double Bellows Roll Tracking Unit, from Maury Willyard |
| 2007.05.03.07 | Seek Double Bellows Roll Tracking Unit, from Maury Willyard |
| 2007.01.14.10 | Willis Player Action Tracking System, from Ken Vinen |
| 2007.01.13.07 | Willis Player Action Tracking System, from Jeff Davis |
| 2006.09.28.04 | Piano Roll Tracking, from Hal Waters |
| 2006.09.27.07 | Improved Roll Tracking System, from John Mulder |
| 2005.12.18.09 | Seek Roll Tracking Assembly for Baldwin Manualo, from Robert Loeffler |
| 2005.08.01.05 | Lauter-Humana Roll Tracking System, from Arthur Marino |
| 2005.07.27.12 | Lauter-Humana Roll Tracking System, from Skip Downing |
| 2005.07.21.08 | Seek Part for Baldwin Modello Tracking Mechanism, from Al Mamer |
| 2005.02.06.03 | Lauter-Humana Roll Tracking System, from John A. Tuttle |
| 2004.12.02.06 | Aeolian Themodist Roll Tracking System, from Arlene F. Smart |
| 2004.11.17.11 | Ampico Symphonique Tracking Problem, from Howard Wyman |
| 2004.11.16.06 | Ampico Symphonique Roll Tracking Problem, from Eliyahu Shahar |
| 2004.11.09.01 | Deformed Spool Flange Causes Tracking Problem, from Jerry F. Bacon |
| 2004.11.06.02 | Ampico Symphonique Roll Tracking Problem, from Chris Bannon |
| 2004.09.11.08 | Welte Autopiano 4-Pneumatic Tracking System, from John Johns |
| 2004.09.09.03 | Welte Autopiano 4-Pneumatic Tracking System, from Tim Gautreaux |
| 2004.05.19.05 | Music Roll Tracking System & Dirty Tracker Bar, from Joyce Brite |
| 2004.01.18.02 | Seek Pneumatic Tracking System for Story & Clark, from Duaine Hechler |
| 2003.11.15.04 | Mills Violano Roll Tracking Problems, from Hal Davis |
| 2003.11.14.07 | Mills Violano Roll Tracking Problems, from Michael Woolf |
| 2003.07.27.11 | Ampico B Roll Tracking Problems, from Bob Hunt |
| 2003.07.25.18 | Pratt-Read Roll Tracking Problem, from John Rutoskey |
| 2003.07.25.17 | Ampico B Roll Tracking Problems, from Jay Albert |
| 2003.07.24.03 | Pratt-Read Roll Tracking Problem, from Michael Hamilton |
| 2003.06.13.09 | Fix the Tracking System to Avoid Roll Tearing, from Pete Knobloch |
| 2003.06.12.07 | Fix the Tracking System to Avoid Roll Tearing, from Ed Copeland |
| 2003.06.11.13 | Fix the Tracking System to Avoid Roll Tearing, from D. L. Bullock |
| 2003.06.10.07 | Fix the Tracking System to Avoid Roll Tearing, from Eliyahu Shahar |
| 2003.05.20.08 | Baldwin Player Piano Tracking System, from Jeff Davis |
| 2003.04.07.05 | Air-O-Player Piano Roll Tracking Mechanism, from Robbie Rhodes |
| 2002.07.16.09 | Pratt-Read Tracking Device, from James Jelinek |
| 2002.07.15.09 | Pratt-Read Tracking Device, from Tim Baxter |
| 2002.07.13.03 | Pratt-Read Tracking Device, from John Rutoskey |
| 2002.05.31.02 | Piano Roll Tracking, from Jan Johnson |
| 2002.02.07.05 | Ampico A Grand Tracking System Improvements, from Pat DeWitt |
| 2001.12.28.05 | Gulbransen "Fishing Pole" Tracking Mechanism, from Les Huth |
| 2001.12.28.04 | Gulbransen "Fishing Pole" Tracking Mechanism, from Steve Bentley |
| 2001.12.27.10 | Gulbransen "Fishing Pole" Tracking Mechanism, from Craig Brougher |
| 2001.12.27.09 | Gulbransen "Fishing Pole" Tracking Mechanism, from Pete Knobloch |
| 2001.12.27.08 | Gulbransen "Fishing Pole" Tracking Mechanism Cord, from Dan Harrett |
| 2001.12.27.07 | Gulbransen "Fishing Pole" Tracking Mechanism Cord, from Hal Davis |
| 2001.12.27.06 | Gulbransen "Fishing Pole" Tracking Mechanism Cord, from Ken Vinen |
| 2001.12.27.05 | Gulbransen "Fishing Pole" Tracking Mechanism Cord, from Diane H. Kay |
| 2001.12.26.07 | Gulbransen "Fishing Pole" Tracking Mechanism, from Stephen Kent Goodman |
| 2001.12.26.06 | Gulbransen "Fishing Pole" Tracking Mechanism, from Vincent Morgan |
| 2001.12.26.05 | Gulbransen "Fishing Pole" Tracking Mechanism, from John Ledwon |
| 2001.12.25.03 | Gulbransen "Fishing Pole" Tracking Mechanism, from John A. Tuttle |
| 2001.12.24.09 | Gulbransen Tracking Mechanism, from Les Huth |
| 2001.10.06.01 | Tracking Systems, from Dick Merchant |
| 2001.10.03.06 | Tight Music Roll Spools & Tracking Mechanisms, from John Rutoskey |
| 2001.09.28.06 | Player Piano Tracking Mechanisms, from Jeff Davis |
| 2001.09.28.05 | Player Piano Tracking Mechanisms, from Bryant Stott |
| 2001.09.28.04 | Player Piano Tracking Mechanisms, from John A. Tuttle |
| 2001.09.26.04 | Player Piano Tracking Mechanisms, from Roger Waring |
| 2001.09.26.03 | Player Piano Tracking Mechanisms, from Jerry F. Bacon |
| 2001.09.25.05 | Player Piano Tracking Mechanisms, from Ed Sprankle |
| 2001.09.19.02 | Player Piano Tracking Mechanisms, from Jon Miller |
| 2001.05.30.05 | Early Duo-Art Theme Box and Tracking Device, from Barry Dennis |
| 2001.05.29.08 | Early Duo-Art Theme Box and Tracking Device, from Sam Harris |
| 2001.05.28.06 | Early Duo-Art Theme Box and Tracking Device, from Barry Dennis |
| 2001.02.27.04 | Music Roll Tracking Systems, from Don Teach |
| 2000.12.18.05 | Brand Systems Fishing Pole Tracking Mechanism, from Bjorn Isebaert |
| 2000.12.14.09 | O-Roll Tracking Problems, from Craig Brougher |
| 2000.12.09.01 | O-Roll Tracking Problems, from John McClure |
| 2000.11.14.09 | Philipps Ducanola Roll Tracking System, from Paddy Handscombe |
| 2000.11.10.05 | Philipps Ducanola Roll Tracking System, from Dan Wilson, London |
| 2000.09.06.03 | Duo-Art Tracking Mechanisms, from Sam Harris |
| 2000.09.03.08 | Duo-Art Tracking Mechanisms, from Ed Chaban |
| 2000.07.20.09 | String-Winding Music Roll Tracking Device, from Horacio Asborno |
| 1999.11.20.10 | Single-Finger Music Roll Tracking System, from Julian Dyer |
| 1999.11.16.06 | Single-Finger Music Roll Tracking System, from Mike Kitner |
| 1999.11.15.11 | Single-Finger Music Roll Tracking System, from Craig Brougher |
| 1999.11.14.11 | Single-Finger Music Roll Tracking System, from Mike Kitner |
| 1999.11.14.10 | Single-Finger Music Roll Tracking System, from Richard Vance |
| 1999.11.14.09 | Single-Finger Music Roll Tracking System, from Craig Brougher |
| 1999.11.14.08 | Single-Finger Music Roll Tracking System, from Dan Wilson, London |
| 1999.11.13.13 | Single-Finger Music Roll Tracking System, from Stephen Kent Goodman |
| 1999.05.13.07 | Roll Tracking Aid in Becker Bros. Player, from Bill Boulton |
| 1999.05.08.10 | Roll Tracking Problem, from Gerry Bay |
| 1998.09.02.17 | Aeolian Double-Finger Tracking System, from John Phillips |
| 1998.09.01.13 | A Different Single-Finger Tracking System, from Phil Dayson |
| 1998.09.01.12 | Aeolian Single-Finger Tracking System, from Dan Wilson, London |
| 1998.09.01.11 | Aeolian Single-Finger Tracking System, from Julian Dyer |
| 1998.08.31.15 | Aeolian Single-Finger Tracking System, from Stephen Kent Goodman |
| 1998.08.30.07 | Aeolian Single-Finger Tracking System, from Dan Wilson, London |
| 1998.08.29.08 | Aeolian Single-Ear Tracking System, from Stephen Kent Goodman |
| 1998.06.08.08 | Springs for Aeolian Tracking Fingers, from Bob and Sonja Lemon |
| 1998.06.08.07 | Springs for Aeolian Tracking 'Ears', from Spencer Chase |
| 1998.06.07.07 | Seek Springs for Aeolian Tracking Fingers, from Randy Blake |
| 1998.05.07.10 | Problems With Roll Tracking, from Bruce Clark |
| 1998.05.07.09 | Problems With Roll Tracking, from Douglas K. Rhodes |
| 1998.05.06.21 | Problems With Roll Tracking, from Pat DeWitt |
| 1998.03.29.21 | Gulbranson Tracking Mechanism, from D. L. Bullock |
| 1998.03.26.02 | Introduction & Gulbranson Tracking Mechanism, from Larry Martin |
| 1997.10.01.13 | My Tracking Device Experiment ("fffft fffft"), from John Rutoskey |
| 1997.09.19.16 | Ampico B Tracking Mechanism, from Craig Brougher |
| 1997.09.19.15 | Roll Tracking Mechanisms, from Peter Neilson |
| 1997.09.18.13 | Roll Tracking Mechanisms, from Craig Brougher |
| 1997.09.04.07 | Roll Tracking & Repairing Torn Music Rolls, from Julian Dyer |
| 1996.12.03.15 | Roll Tracking Problem, from Karl Ellison |
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