Violink - The World of Violins has links to most WWW sites pertaining to instruments of the violin family.
The University of New South Wales has considerable information on Musical Acoustics in its Web page.
Gamut Strings has an interesting article on the history and manufacture of gut strings.
Bjorn Industries has an interesting article on the manufacture of hide glues.
Robert Zuger has some interesting ideas on the geometrical design of a violin.
For a wealth of information on historic instruments, visit the Web site of Dmitry Badiarov.
For an excellent slideshow on bow making, visit the Web site of Thomas M. Gerbeth