This is a series of lists to identify the missing articles in Wikipedia related to Art. It is based on the concept of "List of vital articles" but specifically for art. There are three lists: art materials; art techniques; conservation-restoration materials; and conservation-restoration techniques. The point of creating these lists is to identify the 100 most important articles in each one so that the articles can then be assessed and improved.
Here are some good online resources:
Art & Architecture Thesaurus Online (AAT)
Art Materials Information and Education Network, also known as AMIEN
Conservation & Art Material Encyclopedia Online (CAMEO)
Grove Art Online (known as the Grove Dictionary of Art); subscribers only.
Preserv'Art by the Centre de conservation du Québec (CCQ) (English) & (French)