The most recent submissions are listed first.
| Digest Nr | Subject and Author |
 |
| 2008.04.18.05 | Duo-Art Organ Roll Characteristics, from Bob Taylor |
| 2005.03.22.09 | Pneumatic Valve Transfer Characteristics, from Spencer Chase |
| 2005.03.21.01 | Pneumatic Valve Transfer Characteristics, from Bob Taylor |
| 2002.10.01.05 | Wurlitzer Band Organ Pump Characteristics, from Stephen Lewin |
| 1998.06.29.16 | Centrifugal Fan Characteristics, from John Wale |
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