The most recent submissions are listed first.
| Digest Nr | Subject and Author |
 |
| 2008.08.18.02 | Rudolf vs. Rudolph Player Piano in Canberra, from Neil Stevenson |
| 2008.08.06.08 | Rudolf Piano Company in Pierce Piano Atlas, from Jack M. Conway |
| 2008.07.31.02 | Rudolf Player Piano in Canberra, from Neil Stevenson |
| 2008.07.28.05 | Rudolf Player Piano in Canberra, from Neil Stevenson |
| 2000.01.23.03 | 42-Key Organ by Rudolf Bruns of Berlin, from Ralph Schack |
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