The MMD Archives presently has three different spellings for this
reproducing system developed by Melville Clark and installed in the
Clark Apollo pianos.  I suspect that the owners of the music rolls
spell the name as it appears on the roll, and that the other spellings
are 'sound alikes', but maybe Clark used all spellings.

I'd prefer to settle on just one name for the Archives.  Can someone
provide photos of trade advertisements, or the like, which show the
name(s) and spelling(s) which the public saw in print?

Robbie Rhodes