The comprehensive Blue Book of Gun Values is going strong and has just rolled out its 42nd edition with more than 2,500 pages of firearm values and related information.Taking over the mantle of Blue Book production are two strong editors, Lisa Beuning and Zachary R. Fjestad, Steve Fjestad's nephew. This latest edition joins the nearly 2 million other editions in circulation, and the books have long provided firearm collectors and retailers with a comprehensive understanding of firearm condition and value.