Images from The Alan G. Bates Harmonica
Trumpet Organ Harmonica by Andreas Koch, Trossingen, Germany, ca. 1920
NMM 8687. Trumpet Organ harmonica by Andreas Koch, Trossingen, Germany, ca. 1920.
In this version of Koch's popular Trumpet Organ, the harmonica and its five non-functional horns are
mounted in a cylinder with capped ends. Alan G. Bates Collection, 2000.
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Alan G. Bates Harmonica Collection
National Music Museum
The University of South Dakota
414 East Clark Street
Vermillion, SD 57069