Far more than just a collection of links, this site offers advice on integrating children's books in a variety of curriculum areas, a newsletter, articles, reviews, annotated bibliographies, and a wealth of other material. This site has gained a nicer look, but is still not as extensive as one might hope. Nonetheless it is worth a visit. I would have loved it as a kid, and despite its flaws, think it's pretty cool now. The 1993 through 1999 editions are available on the Web.
Annotations are minimal, but it is still one of the best and most complete Web directories.