| Digest Nr | Subject and Author |
|---|
 |
| 2020.10.02.03 | Hupfeld DEA Vorsetzer on YouTube, from Douglas Heffer |
| 2017.12.25.05 | Seek Hupfeld DEA Player Mechanism, from Marc Widuch |
| 2015.01.31.03 | FS: Hupfeld DEA Piano Rolls, from Mike Boyd |
| 2013.01.09.02 | Music Rolls for Hupfeld DEA Vorsetzer, from Douglas Heffer |
| 2013.01.06.01 | Seek Music Rolls for Hupfeld DEA Vorsetzer, from Franco Severi |
| 2009.07.19.03 | FS: Hupfeld DEA Reproducing Piano Rolls, from Philip Jamison |
| 2006.05.10.04 | FS: Hupfeld DEA Upright in Pennsylvania, from Philip Jamison |
| 2005.04.25.10 | FS: Collection of Hupfeld DEA Music Rolls, from Jonas Anhede |
| 2004.06.27.05 | Catalog of Hupfeld DEA Piano Rolls, from Eberhard Vogel |
| 2004.05.13.06 | FS: Pleyel DEA Reproducing Piano in France, from Robbie Rhodes |
| 2002.04.18.12 | Seek Roenisch Hupfeld DEA Electrical Data, from Miguel de Mattos |
| 2002.03.24.09 | Seek Roenisch Hupfeld DEA Connection Data, from Miguel de Mattos |
| 2002.01.27.08 | Hupfeld DEA Music Rolls Recut by Thomas Jansen, from Nicholas Simons |
| 2002.01.27.07 | Hupfeld DEA Reproducing Player Piano, from Dan Wilson, London |
| 2002.01.26.08 | Hupfeld DEA & Rolls for Dienst Player Mechanism, from Nicholas Simons |
| 2002.01.25.05 | Restoring Roenish Hupfeld DEA in Lisbon, from Miguel de Mattos |
| 2000.07.06.18 | Hupfeld Dea, Phonola & Triphonola, from Jonathan Holmes |
| 1998.03.16.07 | Hupfeld Dea, Duo-Art, or Movies ?, from Philippe Rouillé |
| 1998.03.13.02 | Teresa Carreno Hupfeld DEA Rolls, from Wayne Stahnke |
| 1996.05.10.10 | FS: 77 Hupfeld DEA Rolls, from Andreas Hohlfeld |
|
