Let's have a thread about books about toys! Guidebooks and price guides and the like. Recommend your most useful or interesting reads, or show your collection.

I bought this Schiffer guide to Snoopy looking for info on some figures, but it's absolute crap. The pictures are large and well taken, but it's all common crap. Not even remotely comprehensive, and arranged mostly at random. Only good to flip through for the pictures.