Dear Everyone,
I came across the following e-books that are nice for various reading levels:
http://www.magickeys.com/books/
http://www.hubbardscupboard.org/printable_booklets.html
http://www.enchantedlearning.com/categories/preschool.shtml
and more resources here:
http://eduscapes.com/tap/topic93.htm#1
Enjoy!
Ayesha