Hello Shirley.  I have a book, "Black Forest Clocks", by Rick
Ortenburger, containing a few photos of organ clocks, but only two
photos of the cases.  Both of the pictured cases are tall clocks,
but there are several photos of case-less bracket clocks.  If you
can't find the book, I'd be happy to send you the photos.

Regards,
Bob Loesch
Northern California
http://home.jps.net/~rrloesch/index.htm