With respect to your e-mail on the MMD, we have friends who have a large
collection of antique toy pianos.  They advise me that there is a toy
pianos collectors group which issues a news letter on the subject.  Our
friends are not members and could not readily locate the address of the
secretary of the hobby group.  They recall that the address is listed in
the once a year listing of hobby groups of collectors of antiques in "The
Antique Trader."   With best wishes,

Del Lohuis