Links
Some of my favourite Synth-DIY sites:
ASM-1 Analog Synthesizer Module
Ian Fritz's site
Jarek Ziembicki's site
Jim Patchell's site
Jörg Schmitz' Site
John Hollis - Assorted Circuit Designs
Jürgen Haible's site
Music From Outer Space
neil's webbly world
Osamu Hoshuyama's site
Peter Grenader's home-brewed modules
René Schmitz' site
Retrosonik
Roman Sowa's site
Steve Thomas' site
The Electronic Peasant
uCApps.de
Yves Usson's site
Beginner's Guide to Electronic Instrument Building
EEWeb Electronics Forum