| Digest Nr | Subject and Author |
|---|
 |
| 2016.11.22.05 | FS: Coin-op Piano by Engelhardt, St. Johnsville, from Rocky Cook |
| 2012.03.07.11 | FS: Roth & Engelhardt Push-up Player, from David Sharpe |
| 2010.10.27.01 | Berry-Wood Piano Made By Engelhardt, from Dave Bowers |
| 2010.10.26.01 | Berry-Wood Piano Made By Engelhardt, from Dave Bowers |
| 2010.10.25.06 | FS: Berry-Wood Piano Made By Engelhardt, from Jerry Wagner |
| 2010.08.31.02 | Revisionist History: Peerless & Engelhardt, from Art Reblitz |
| 2009.07.31.01 | Seek Peerless & Engelhardt Information & Ephemera, from Dave Bowers |
| 2009.03.26.07 | FS: Engelhardt 54-note Cabinet Nickelodeon, from Ann S. MacMillan |
| 2006.09.20.01 | Stolen Link & Engelhardt Parts, from Gordon Stelter |
| 2003.07.23.01 | Engelhardt Peerless Coin-Op Player Piano, from Kathy Struble |
| 2000.04.26.10 | Engelhardt Banjorchestra Bass Drum Effect, from Andrew Barrett |
| 1999.10.08.10 | Seek Peerless Engelhardt Model F Art Glass, from Tom Grace |
| 1999.08.31.17 | Seek Rolls by Losche, Weber, Engelhardt, National, from Stephen Kent Goodman |
|
