Blue Book of Gun Values by S.P. Fjestad (2005, Paperback)

This is a very good reference book if you are looking for any information on firearms or firearms manufacturers. It is the industry standard, and has many thousands of different models by all different domestic and foreign manufacturers. You can determine the market value of your firearms and it will help you identify your gun if you're not sure which model it is. It also has some articles in each edition, which are sometimes interesting, but not nearly as helpful as the model listings, which make up the bulk of the book. Great reference to have around.