Carol,  Regarding Lador, the Musical Box Society has published some
interesting articles about powder boxes and their musical movements,
by author Phyllis Van Marter.

The MBSI would be interested in your findings; perhaps you would be
willing to share your information in the way of an article so that we
could all benefit from your work.

I hope to hear from you.  Kind regards,

Angelo Rulli
MBSI Editor
4550 Evergreen Dr., St. Paul, MN 55127
musicbox@pioneerplanet.infi.net