JustArtist.com lists great resources covering many topics related to artist information, computer graphics, craft, egg tempera, landscapes, museums, paint, oils painting, posters & prints, watercolors.
The oldest art museum in the Pacific Northwest houses a permanent collections of European and American art as well as a fine collection of English silver.
MuseumLink's Museum of Museums will eventually contain links to every museum on the planet, from the world's largest to the most obscure (assuming they have a website).
