http://www.modempool.com/haldavis/hammond.txt. LocalCopy
http://www.theatreorgans.com/hammond/paul.htm An essay, Hammond Organ Additive Synthesis -- A New Method, by ?PaulSchnellbecher. I don't really believe it, but he presents an interesting theory, along with alternative ("improved") settings for the StandardPresets.
The Science of Hammond Drawbar Registration, which looks at drawbar settings a bit more scientifically, and describes methods for combining settings, and for finding the setting to match a particular sound. A handy drawbar combination calculator is also included.
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