Let me tell you straight up that if you like any of Maurice Sendak's drawings, this book is an instant treasure. There are so many illustrations in this book that you could spend weeks looking over them and still find something new on any given day. Getting 100% full pages of art from Where the Wild Things Are is enough, but finding out that it was originally going to be Where the Wild Horses Are and getting some artwork from that version? I was blown away. And that's just the mist around the tip of the iceberg! When it comes down to it, there's something here for everyone- the art is diverse, though that's to be expected from Mr. Sendak, and it's presented in a professional manner with no clutter or annoying lack of organization.
However, the biography by Selma Lanes had me shaking my head after just a few sentences. As others have pointed out, she's bonkers for the guy and respects his privacy so much that it's downright pointless for her to even be talking about him at all. Many of the stories for the art get to the point where she does everything but get down on her hands and knees and worship the guy. I consider Maurice Sendak to be one of the greatest illustrators I've ever seen the work of, but come on. Nearly every paragraph had something that made me cringe with embarrassment.
Basically, get this for the drawings and just ignore the text that isn't labeling the art, or isn't on the art itself. Heck, this book could've lost a pound or two if they skipped the bio! Regardless, this is a book that I hold dear and enjoy showing others to see just how far Mr. Sendak can go, but even then I look forward to another collection since he's still drawing.