| Digest Nr | Subject and Author |
|---|
 |
| 2024.09.18.01 | 60 Hz to 50 Hz Static Frequency Converter, from Spencer Chase |
| 2018.11.27.02 | Celebrating 50 Years Of Music Boxes, from Nancy Fratti |
| 2018.03.01.01 | Celebrating 50 Years Of Music Boxes, from Nancy Fratti |
| 2015.12.02.02 | 50 Years Retirement Auction in Newnan, Georgia, from Preston Evans |
| 2015.10.01.02 | 50 Years Retirement Auction in Newnan, Georgia, from Preston Evans |
| 2015.06.08.07 | Seek 50 Hz Motor for Ampico in Australia, from Roy Powlan |
| 2014.06.08.03 | FS: 50- & 52-key Dutch Street Organs, from Simon Loopstra |
| 2011.03.18.04 | FS: Lot of 50 Style 'A' Coin Piano Rolls, from Les Beebe |
| 2007.09.11.01 | Seek Celesta 50 cm Discs, from Klaus Peuler |
| 2007.02.21.02 | 50 Years of MBSI Articles On-line, from John A. Tuttle |
| 2007.02.20.02 | 50 Years of MBSI Articles On-line, from Ralph Schack |
| 2005.08.02.07 | Seek Ampico Favorite 50 Roll "Amour Coquet", from Larry Norman |
| 2004.10.14.03 | Wurlitzer Style 50 "Kiddie Organ" Case Colours, from Jack M. Conway |
| 2004.10.14.02 | Wurlitzer Style 50 "Kiddie Organ", from Dan Robinson |
| 2004.10.13.04 | Wurlitzer Style 50 "Kiddie Organ" Case Colours, from Ron Schmuck |
| 2000.07.24.08 | 50- and 60-Hz Mains Frequency Conversion, from Bill Maxim |
| 2000.07.23.13 | 50- and 60-Hz Mains Frequency Conversion, from John Spradley |
| 2000.06.13.02 | Style 50 Fotoplayer in Sydney, Australia, from John Weismantel |
| 2000.02.14.01 | Introduction & Wurlitzer Styles 50 & 103, from Bruce Pier |
| 2000.01.11.02 | Wurlitzer Style 50 Band Organ, from Dan Robinson |
| 2000.01.10.05 | Seek Wurlitzer Style 50 Kiddie Band Organ Plans, from Paul Ward |
| 1999.07.23.12 | FS: Lot of 50 Recut Duo-Art Rolls, from Richard Riley |
| 1999.07.08.10 | Player Piano Ring & Life After 50 :-), from John A. Tuttle |
| 1999.05.30.05 | Chein PianoLodeon on 50 Hz, from Mike Knudsen |
| 1998.11.08.09 | Solid State Strobotuner at 50 Hz, from Roberto Pistolesi |
| 1997.11.25.10 | 50 Note Musical Movements, from Jayne Engle |
| 1997.08.26.15 | FS: Organ pipes -- $ 50, from Robert Linnstaedt |
| 1996.08.05.09 | Converting Bruder 50 to Wurlitzer 150 scale, from Fritz Gellerman |
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