There is not much biographical information available about her on the web, except www.absolute-sway.com, Elizabeth's own website, on which she yammers at such great length about her childhood that I just can't make myself care. I will tell you that she has written over forty books for kids, and she lives in New York. The rest is up to you. Here's what she wrote:
Books:
As the Crow Flies
Asleep in a Heap
The Battle for the Castle
Bear and Roly-Poly
Bear's Christmas Surprise
The Castle in the Attic
Dumpy La Rue
He Is Risen
I'm the Boss!
Island Justice
The Little Humpbacked Horse
Maggie and the Monster
Promises
Shoes
Sloppy Kisses
Story of the Nativity
A Very Noisy Girl
thanks to:
http://www.absolute-sway.com/winthrop/
http://www.ipl.org/youth/AskAuthor/winthrop.html
www.amazon.com