ARTNET - Artnet is online service provider for Fine Art, galleries, artists indexes and information about exhibitions.

Look Smart Find Articles - Interacive Research which contains about 5,5 million articles and over 900 free e-journals accessible online.

Google Scholar - is breadly search for scholary literature. Users can search across many disciplines and sources: articles, theses, books, abstracts and court opinions,academic publishers, online repositories, universities and other free web sites.