So these are the books on craft that I have found the most helpful.
On Writing by Stephen King
The Writing and Critique Group Survival Guide by Becky Levine
Writing Picture Books by Ann Whitford Paul
Writing it Right by Sandy Asher
The last two books are by far the most highlighted, bookmarked and tea-stained of the four.
And Take Joy by Jane Yolen is just a lovely read. But then again, what by Jane Yolen isn't.