The Official 2002 Blackbook Price Guide to United States Postage Stamps by Marc Hudgeons (2001, Paperback)

A new edition of this mass market paperback gets printed every year. I can only hope that most copies get recycled. I'm of the opinion that the highest and best use of these books is mulch or compost. The values for mint sheets and plate blocks quoted in this "price guide" are vastly over-stated. Any eBay seller would be delighted to sell to you at Official Blackbook prices... In short, you have no hope of selling your collection at the prices quoted in this book. While some of the information at the front of the book will be helpful to new collectors, I belive the use of black and white photographs and the placement of pictures on pages far removed from the stamp description make this a poor reference guide.
If all you need is a useful up-to-date reference for US stamps, but don't want to fork out the price of a Scott Catalogue, then get a copy of Mystic's US stamp catalogue instead. You can find Mystic on the web via Google and they will send you a copy of their full color catalogue for free. At least Mystic actually sells stamps - not price guides.