Händler und Hersteller mechanischer Musikinstrumente

Jäger & Brommer
D.C. Ramey Piano Company
Musikwerkstatt Monschau

Wolfgang Heisig
Werner Baus
Paul-Heinz Wirtz

Gotthard Arnold
Arno van der Heijden
Guido Severijns

George Bogatko -- Composer, Arranger
PianoDisc (Music Systems Research) (USA)
QRS (piano rolls) (USA)

Cooley's Olde Tyme Piano Shoppe, Inc. (USA)
Musicbox world (USA)
Ragtime automated Music
Robert Stanoszek (USA)
Mechantiques (USA)
THE GREAT CANADIAN NICKELODEON COMPANY, LTD

Bill Wineburgh
Heinz Best