I agree that Bill Cohenour's book has more usefull information. His book is always up to date because he is using print-on-demand. This means it isn't printed until you order it. He has tabulated price history from auction sales for 2002 to 2004. This gives you history on actual sales and not some fictitious guesses by other authors. He covers all from the $7's to the $200's with a separate part for Coppers.