Books That Heal is a wonderful resource for finding "bibliotheraphy" for the Pre-K - 2nd grade set
The Carle Museum Blog has seasonal and interesting picture book recs. (wish it was closer!) & Booklists
Teach with Picture Books has great extension suggestions
Anita Silvey's Children's Book-a-Day Almanac - a book for each calendar day
50 books every kid should read (more middle grades) from UK Independent
Kidlit Women's History Month - incredible authors blog about their favorite women's history month books
(Speaking of -- I put some feminist picture books in the auction, to complement the Maine Women's Lobby's membership donation, and one of them is this new book - so interesting and great illustrations - worth a check out of the library, at least)