"Baumbach, Josef (est. 1842). Maker in Viena (Dolge/PIANOS, 457; not listed in either Haupt/Wien or Ottner/Wien" - Martha Novak Clinkscale, Makers of the Piano, Vol 2, Oxford 1999, S. 23
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"Baumbach, Josef (est. 1842). Maker in Viena (Dolge/PIANOS, 457; not listed in either Haupt/Wien or Ottner/Wien" - Martha Novak Clinkscale, Makers of the Piano, Vol 2, Oxford 1999, S. 23
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