Regarding the request for information on musical saws, there is a
quarterly publication called the "Musical Saw News".  Someone there
could very likely help with this.  Contact:

    Musical Saw News
    P.O. Box 84935
    San Diego, CA 92138-4935

If the "Electronic Musical Saw" is, in fact, a Theremin, and
information is needed on it, I would suggest contacting

    Dennis James
    c/o Hokum Hall
    7904 35th Avenue SW
    Seattle, WA 98126

Incidentally, although they are certainly not mainstream instruments,
both musical saws and Theremins are available new today.

Bruce Miller
Issaquah, WA