Autograph Collectors need the two Books.  The Standard Guide to Collecting Autographs A reference & Value Guide.. 50,000 Autograph Values, 800 fasimile Signatures. 10 years old but 800 real signatures. 2nd is A 1998 Alexander Autograph Auction book...Many Many Signatures.Astronauts, Movies, Political. Civil War letters & Photos. Both Still are great reference items..