Mag, this was fun to look for. Thanks. With a little more diligence in searching "dogpile.com" I found a couple of more interesting sites.

This one has an excellent picture of a Marxochime and other instruments pictures here

This one has an actual recording of a Marxophone audio here

And, this one look like a great all around link to the American Shrine to Music Museum here

For those who want the address for later:

1- http://users.desupernet.com/williams/marx.htm

2- http://www2.netdoor.com/~rlang/marxop.htm

3- http://www.usd.edu/smm/FAQ.html

Hope I go those all right. If not, I'll be back!

kat