Rangertone Reel to Reel Tape Recorder Manufacturers - Museum of
February 2011 – Preservation Sound
Uher (brand) - Alchetron, The Free Social Encyclopedia
Rangertone Reel to Reel Tape Recorder Manufacturers - Museum of Magnetic Sound Recording
Cassette recorder museum
Martin Theophilus of The Museum of Magnetic Sound Recording, Part One – PS Audio
The 'Rangertone Organ'. Richard H.Ranger, USA, 1932 – 120 Years of Electronic Music
Reel to Reel Tape Recorder Manufacturers - Sony Corporation • Superscope Technologies - Museum of Magnetic Sound Recording
National Museum of American History
Reel to Reel Tape Recorder Manufacturers - Sony Corporation • Superscope Technologies - Museum of Magnetic Sound Recording