Impressionism at Wikipedia - Encyclopedical information about Impressionism.
En Plain Air at Impressionism.org - Background on the Signature Character of Impressionism.
Impressionism at Britannica - More encyclopedical background of Impressionism.
Impressionism in the Visual Arts - Detailed information from Impressionism.org.
Impressionism Glossary Entry at Tate - Information on the Impressionism approach in painting.
Impressionism Gallery at BBC - Impressionist artworks on digital display.
Impressionism: Art and Modernity at MetMuseum.org - Background information on the Impressionism art movement.
Impressionist Artists at Artcyclopedia - Chronological list of Impressionism artists.
Impressionism at ibiblio.org - Historical information on the Impressionism art movement.
Impressionism, Modernity and Tradition at Impressionniste.net - Historical information on the art movement.
French Impressionism at Visual-arts-cork.com - Historical information and artists list from the French Impressionism art movement.
Normandy Home of Impressionism at Normandy Tourism Portal - Information from the official Normandy Tourism website.
Artists Exhibiting in the First Impressionism Gallery 1874 at about.com - List of artists who exhibited artworks in the first ever Impressionism Gallery in Paris, France.
Impressionism at Encyclopedia.com - Historical Impressionism information.
Impressionism News at Huffington Post - Arts news related to the Impressionism movement.

Impressionism Exhibition at USEUM - Artworks and historical Impressionism information.
Impressionism Artworks at WikiArt - Selected Impressionism paintings.
British Impressionism at National Portrait Gallery - List of British painters who are representatives of the Impressionism art movement.
Impressionism Painters at Biography.com - List of key Impressionists with their respective biographies.
Impressionism History, Artists and Artworks at wwar.com - Historical facts, painter biographies and artworks.
Paul Cezanne Biography and Artwork Analysis at Oil Painting Techniques - Biography and analysis of the Impressionism paintings of Cezanne.

Impressionism - Art History 101 Basics at about.com - Historical information on Impressionism.
French Impressionism at Art History Archive - Historical background along with chronological list of events.

Techniques of the Impressionists: Broken Colour at about.com - More information on the broken colour technique used by Impressionists.
Wet-on-wet Painting at Wikipedia - Technique used by Monet and other Impressionists.
Impasto Technique at Wikipedia - Painting technique used in primarily with oil paint and used by the original Impressionists.