CHILDREN'S ILLUSTRATION

...the first World Wide Web exhibition created and maintained by the Rutgers University Libraries, of Rutgers, the State University of New Jersey. The books depicted here have all been drawn from the collection of Ann Montanaro...
http://www.libraries.rutgers.edu/rul/libs/scua/montanar/p-ex.htm#start

Mathers preserved the various versions of her work over a ten-year period from first draft and sketches to published book that you can see here: http://eclipse.rutgers.edu/petra/

A rough dummy: http://eclipse.rutgers.edu/petra/sketch/launcher1.jsp?P=FC

The book: macromedia flash or low resolution