Pigments
Pigments For Making Artist's Paint - Very thorough site by Tony Johansen Pigments through the Ages - Historical & symbolic meanings of pigments by Juraj Lipscher & Michael Douma. Forbes Pigment Database - Very large and technical with searches and pigments lists.	Sinopia.com - Browse an extensive archive about selecting and using raw materials. Kremer Pigments - Denmark site also available in english. Safely Handling Artist's Materials - Natural Pigments - Good information from naturalpigmants.com
Oils
Resins
Glues, Starches, and Gums
Waxes
Beeswax Medium Technical Information - Green Art Studio: Paintings by Greg Patch.
Solvents
Additives