I put this HammondWiki together.
I am a Hammond hobbyist. I own a nice HammondC3 which is hooked to a PR-20ConvertedToPR-40,
a Leslie122 and a Leslie31H. I also own an A-102 (at a friend's house), and a model M (which is now a computer
desk, and a pile of parts.) Also, a Leslie25, about which you can read more 
here.
If you want to send e-mail, the number is 
dairiki@dairiki.org.
The content of this page is Copyright (C) 2000, 2001, 2002 Geoffrey T. Dairiki and
the other authors of the content, whoever they may be.
This is free information and you are welcome redistribute it
under certain conditions; see
http://www.dairiki.org/HammondWiki/opl.html for details.
Absolutely no warrantee is made as to the correctness of
the information on this page.