9 links
Brandler Galleries
brandler-galleries.com
(near London, UK) specialising in original children's book illustrations.
Illustration House
illustration-house.com
(New York City) Features Rockwell, Leyendecker, N.C. Wyeth.
National Museum of American Illustration
americanillustration.org
The artwork from the golden age of American illustration.
Society of Illustrators
societyillustrators.org
A nonprofit educational organization promoting illustration. Home of the Museum of American Illustration.
The Illustrated Gallery
illustratedgallery.com
(Philadelphia, PA) Gallery with large collection of illustrated art.
UK Illustrators Showcase and Gallery
artsweb.co.uk
Showcase of UK line-art illustrators and watercolorists.