Perhaps not exactly mechanical music, but I'm restoring a large,
37-note Schoenhut upright piano from the around 1910.  This model had
both white and black keys.  It plays two rows of metal bars, but some
of the linkage is gone.  Does anyone know where I could obtain a photo
of the interior?

By the way, Schoenhut also made a 'player piano', of which I also have
an example.  It plays manually and has a cylinder movement playing
"Mr. Radio Man" and another tune.

Philip Jamison
West Chester, Pennsylvania