Tomart's Value Guide to Disney Animation Art by Bob Welbaum, Tom Tumbusch, Tomart Publications (Firm) (1998, Paperback)

This book does one thing and one thing only; it gives a complete guide as to what has been sold and purchased on the traditional auctioning markets prior to the eBay explosion. As someone who is trying to learn the ropes on becoming an animation art dealer, it's an essential guide as to what Disney items have sold for in the past - and what hasn't sold or surfaced on the market yet. Since I bought the book, I've shown it to a few people, all of which started buying and reselling animation art afterwards. Also highly recommend Sotheby's Guide to Animation Art.