To answer Bill Budenholzer's request about what may be seen in mechanical
music "within a 5 or 6 hour drive of St. Louis, Missouri," which would
make Chicago, Memphis, Kansas City and western Indiana within range.

May I suggest to have a look at the listing of museums in the USA (and
throughout the world) I maintain in the web pages Musica Mecanica:

    http://www.cnam.fr/museum/musica_mecanica/a/musee/index.html

Have a nice trip, Bill !

Best regards,

Philippe Rouille (Paris, France)
http://www.cnam.fr/museum/musica_mecanica/