Museums & collections
Eric Carle Museum of Picture Book Art http://www.picturebookart.org
Horn Book History Exhibit http://www.hbook.com/history/default.asp Includes artifacts, memorabilia, notable correspondence, radio interviews and more.
The Kerlan Collection http://special.lib.umn.edu/clrc
Mazza Museum http://www.mazzacollection.org
National Center for Children's Illustrated Literature http://www.nccil.org
Children's illustrator's biographiesWomen children's book illustrators (mainly historic) http://www.womenillustrators.com
Illustrator Biographies from Bud Plant Illustrated Books http://www.bpib.com/illustra.htm#illustopage (mainly historic and not all children's illustrators)