| Digest Nr | Subject and Author |
|---|
 |
| 2024.10.07.01 | FS: Wurlitzer Band Organ Pumps in Ohio, from Craig Wiley |
| 2023.03.14.08 | FS: Ampico Tracker Bar Pumps with Literature, from RJ Ingram |
| 2018.08.27.02 | FS: Small Blower & Two Ampico Pumps, from Bill Chapman |
| 2017.11.30.06 | Speed Of Rotary Vacuum Pumps, from Scotty Greene |
| 2017.11.21.08 | Speed Of Rotary Vacuum Pumps, from Wayne Finger |
| 2017.09.25.10 | Auto-Typist and National Piano Vacuum Pumps, from Art Reblitz |
| 2015.10.16.02 | FS: Ampico B Unit Valves & Pumps, from Gary Hanson |
| 2015.01.04.06 | Pressure & Vacuum Pumps for Tangley Calliope, from Bill Black |
| 2013.02.26.14 | FS: Unknown Piano or Nickelodeon Pumps, from Bruce Miller |
| 2012.08.10.05 | FS: Ampico Box Pumps, from Bob Stewart |
| 2011.04.02.03 | FS: Box Pumps & Electric Motors, from Mark Greisen |
| 2009.06.28.01 | VOVGOA Inscription on Duo-Art Pumps, from Bruce Grimes |
| 2005.02.04.03 | Arielle, Electora & Motora Turbine Pumps, from Paddy Handscombe |
| 2003.02.22.04 | FS: Gulbransen Exhauster Pumps, from James Jelinek |
| 2003.01.07.03 | Spool Frames, Pulleys & Pumps at MMD Tech Site, from Robbie Rhodes |
| 2002.09.28.12 | Turbine Blowers vs. Bellows Pumps, from Ingmar Krause |
| 2002.03.27.10 | Turbine Suction Pumps, from Spencer Chase |
| 2001.05.07.08 | Leather vs. Rubberized Cloth for Rotary Pumps, from Bruce Clark |
| 2001.05.07.06 | Leather for Rotary Vacuum Pumps, from Mark Reinhart |
| 2000.11.28.06 | Rebuilding Turbine Suction Pumps, from Terry Smythe |
| 2000.11.27.09 | Rebuilding Turbine Suction Pumps, from Ed Chaban |
| 2000.09.10.04 | Motora Pumps, from Nigel Perry |
| 2000.03.31.13 | Belts for Piano Pumps, from D. L. Bullock |
| 2000.03.30.09 | Rubber Belts for Piano Pumps, from Richard Schneider |
| 2000.03.29.13 | Rubber Belts for Piano Pumps, from Berley Firmin |
| 2000.01.28.10 | External Pumps & Central Vacuum Supply, from Bruce Clark |
| 1999.11.02.17 | Airflow In Orchestrion Vacuum & Pressure Pumps, from Bernt Damm |
| 1998.09.14.15 | Stiffeners in Vacuum Pumps, from Spencer Chase |
| 1998.07.25.20 | Auto-typist Pumps, from Stephen Kent Goodman |
| 1996.06.21.04 | Re: Steamboat Pumps, from Craig Brougher |
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