• ArtLex Art Dictionary
• The Artchive
• Artcyclopedia
• AMICO Library - Art and Architecture database. Works of art from around the world.
• AICT Art Images for College Teaching
• Metropolitan Museum of Art Timeline of Art History
• Voice of the Shuttle
• WebMuseum
• Art History Resources on the Web
• World Wide Arts Resources
• WetCanvas Virtual Museum
• AskART.com - American artists database
• Art (the-artists.org)
• Mother of All Art and Art History Links
• EmbARK WorldArt Web Kiosk
• J-E Berger Foundation World Art Treasures
• About.com Art History
• Art History Network
• OCAIW Orazio Centaro's Art Images on the Web
• Giorgio Vasari's 'The Lives of the Most Excellent Painters, Sculptors and Architects'
• Nineteenth-Century Art Worldwide Journal (current issue) - past issues
• le vertige divin / Dizzying Grandeur of Rococo
• Biography.com The Impressionists
• National Gallery - Exploring Themes in American Art
• PBS Art:21 - Art in the 21st Century
• Virtual Library Museums Pages
• 1200 Years of Sculpture (Italian)
• Splendors of Christendom
• Metropolitan Museum of Art Glory of Byzantium
• Great Buildings Online
• 40 Centuries of Architecture
• Historical Architecture of Asia
• Islamic Arts and Architecture
• Lantern Slides of Classical Antiquity
• Exploring Ancient World Cultures
• ArtServe at the Australian National University: Art and Architecture mainly from the Mediterranean Basin and Japan
• Huntington Archive of Buddhist and Related Art
• Mexico: Splendors of Thirty Centuries
• artprice.com: Art Market Information Fee-based site, but there is some free information.
• Art Business
  

Books: Use the Library Catalog to search for specific artists in art and biography. General works on the history of art are found in Dewey section 709. For other, more specific works: 720 Architecture; 730 Sculpture; 750 Painting/Paintings, especiall 759 Historical, areas, persons treatment; 760 Graphic arts, Printmaking & Prints; 770 Photography.

A few general works:

• 709 2488
  Cole, Bruce. Art of the western world: from ancient Greece to post-modernism.
• 709 4139
  Gardner, Helen. Gardner's art through the ages.
• 709 453
  Hartt, Frederick. Art: a history of painting, sculpture, architecture.
• 709 5123
  Janson, H. W. History of art.
• 709 ART
  Belton, Robert. Art: the world of art, from aboriginal to American pop, Renaissance masters to postmodernism.
• 709.1821 ADAMS
  Adams, Laurie. A history of Western art.