More old catalogs were found:

  AMP-B-1 - Rebuilder's Illustrated Guide to the Model B Ampico
  WEL-C-27 - Library of Welte-Mignon Music Records - 1927
  DA-C-24 - Library of Duo-Art Music Rolls - 1924

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Duaine Hechler
Florissant, Missouri
http://www.hechlerpianoandorgan.com/