| Digest Nr | Subject and Author |
|---|
 |
| 2021.10.23.01 | Seek Hupfeld Triphonola or Animatic T Rolls, from Miguel de Mattos |
| 2020.05.19.01 | Seek Hupfeld Triphonola & Animatic T Rolls, from Miguel de Mattos |
| 2013.04.09.02 | Seek Hupfeld Triphonola Test Roll, from Tony Marsico |
| 2012.03.15.06 | FS: Hupfeld Helios, Triphonola & Welte Organ Rolls, from Klaus Peuler |
| 2011.12.26.01 | Hupfeld Triphonola Expression System Simulator, from Julian Dyer |
| 2011.10.06.03 | FS: Roenisch Grand Triphonola in California, from Mike McKelvy |
| 2010.10.13.09 | FS: Triphonola and Steck Pianos, from Mike McKelvy |
| 2009.04.10.05 | FS: Steinway "Red" Welte, Triphonola & Steck, from Mike McKelvy |
| 2008.09.20.04 | FS: Triphonola and Other Reproducing Rolls, from Paul Rumpf |
| 2008.06.18.03 | Triphonola in Roenisch Grand Piano, from Mario Solimbergo |
| 2007.09.18.03 | Triphonola Rolls by Carl Reinecke, from Mario Solimbergo |
| 2005.07.31.11 | Seek Hupfeld Animatic T or Triphonola Test Roll, from H. Sulzener |
| 2005.06.29.03 | Seek Triphonola Test Roll Instructions, from Mario Solimbergo |
| 2005.02.13.02 | Triphonola Roll Played at Utrecht Museum, from Niels Berkers |
| 2001.02.10.03 | Seek Hupfeld Triphonola Tube Diagram, from Miguel de Mattos |
| 2000.08.08.07 | Hupfeld Triphonola Roll Description, from Julian Dyer |
| 2000.07.23.05 | Source of Hupfeld Triphonola Rolls, from Tom Jansen |
| 2000.07.14.09 | Seek Triphonola Rolls, from Jonathan Holmes |
| 2000.07.10.09 | Hupfeld Triphonola Piano and Roll Library, from Alan Whytock |
| 2000.07.09.07 | Hupfeld Triphonola Piano & Roll Library, from Dan Wilson, London |
| 2000.07.06.19 | Hupfeld Triphonola Reproducing Piano System, from Paddy Handscombe |
| 2000.07.06.18 | Hupfeld Dea, Phonola & Triphonola, from Jonathan Holmes |
| 2000.07.06.17 | Hupfeld Triphonola Piano & Roll Library, from Julian Dyer |
| 2000.07.06.16 | Hupfeld Triphonola Reproducing Piano System, from Adam G. Ramet |
| 2000.07.05.08 | Hupfeld Triphonola Piano & Roll Library, from Jonathan Holmes |
| 2000.06.28.06 | Triphonola Rolls Recorded by Alexander Scriabin, from Robbie Rhodes |
| 1999.07.14.08 | Hupfeld T-Animatic and Triphonola Rolls, from Dan Wilson, London |
| 1999.07.13.10 | Seek Hupfeld Triphonola Rolls, from Wolfgang Heisig |
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