Bank Street Book Store
  http://www.bankstreetbooks.com/NASApp/store/IndexJsp
"New York's best bookstore for and about children" to you - wherever you are! You'll find children's books arranged by theme, new and notable titles, staff favorites, and numerous resources for parents and teachers.

NAEYC Resources
(National Association for the Education of Young Children)
http://www.naeyc.org/resources/default.asp
Books, Brochures, Videos
“Through its publication program, the National Association for the Education of Young Children (NAEYC) provides a forum for discussion of major issues and ideas in the early childhood field, with the hope of provoking thought and promoting professional growth. (The views expressed or implied in the materials are not necessarily those of the Association. NAEYC does not require, endorse, or distribute any specific curriculum.)”
  http://www.naeyc.org/parent_resources/childrensbooks.asp
Early childhood titles from the NAEYC

New York Public Library
http://kids.nypl.org/reading/recommended2.cfm?ListID=61
“100 Picture Books Everyone Should Know!” A Fantastic resource!

Notes from the Windowsill
http://deeptht.armory.com/~web/jbooks.html
This is a page from a site that concentrates on children's books about Jewish religion and culture. The books here are for read-alouds and older readers.