American Academy of Pediatrics – You have to link to the Academy, right?
American Library Association – Great links and resources geared toward books and learning.
The Talaris Institute – Lots of information about research based baby and child development from the Seattle-bases Talaris Institute.
Transitiontoparenthood.com – Developed by Janelle Durham, one of the authors of Pregnancy, Childbirth and the Newborn, this website offers a huge quantity of information in a straightforward, no-frills manner.
zerotothree.org – National website devoted to a child’s first years. Parent and professional materials.