If you are into DIY electronic music, percussion synthesisers (*) synthesisers (*) , then you will probably have come across references to Thomas Henry’s designs: VCOs (VCO-1), VCF (Mankato), SN-VOICE, etc..
Thomas Henry is often mentioned on electro-music.com, CGS-Synth (Yahoo group), and “Muff Wigglers” forum (Yes, I know..)

What you probably don’t know is that Thomas Henry is also the author of several books on the subject, and that they are available (NEW) from AMAZON.COM..

(“synthesizers” in the US)