Build a Classical Guitar

Follow along with luthier Jeremy Locke in this well written, photo illustrated guide to building a classical guitar.
A very detailed captioned pictorial on classical guitar construction.
Guitarmaker Lukas A. Giefing builds a classical guitar on this pictorial project site.
This site includes pictures and brief descriptions of the construction of current and past guitar projects being built by luthier Dave Schramm for his clients.
This page has a step-by-step tutorial for classical guitar building. It also includes a second tutorial about building a baroque guitar which is only available in Japanese, but has plenty of photos for non-speakers to follow along.
Information and Theory
A wide variety of resources luthiers.
An article on the acoutic design of instruments.