Nocturnes.com

The Metropolitan Museum of Art: Modern Art
Extensive collection of more than 10,000 works of modern art, including painting, sculpture, design, and architecture representing the major artistic movements since 1900.
www.metmuseum.org/

Akita Museum of Modern Art
Yokotoe City, Japan museum which specializes in paintings of last 50 years.
www.dnp.co.jp/

Abstract Expressionism
ArtLex article provides a brief overview of the art movement with a list of major artists.
www.artlex.com/

WebMuseum: Abstract Expressionism
Short introduction and definition of the art movement.
www.ibiblio.org/

Stedelijk Museum of Modern Art
Amsterdam museum which exhibits paintings, sculpture, photography, graphic arts, video and new media, and applied arts and design.
www.stedelijk.nl/

Museum of Modern Art Tarragona
Displaying contemporary paintings and sculpture, the museum also houses a photographic archives and library.
www.altanet.org/

Abstract Expressionism
Description of the art movement with a list of major period artists.
www.biddingtons.com/

MoMA - The Museum of Modern Art
Modern and contemporary art, paintings and sculpture, prints, drawings, photos, architectural models and drawings, decorative arts, furniture. Includes online images and essays.
www.moma.org/

Encyclopedia.com: Abstract Expressionism
Brief overview of the movement of abstract painting that emerged in New York City during the mid-1940's.
www.encyclopedia.com/

Circa Art Magazine: San Francisco Museum of Modern Art (SFMoMA)
Gemma Tipton reviews her retrospective, presenting images and discussing particular techniques used by the artist.
www.recirca.com/