Every student & collector of fine firearms should have a copy of "Treasures of the NRA National Firearms Museum, featuring the Robert Petersen Collection" by Jim Supica, Doug Wicklund & Philip Schreier, currently available at the bargain price of $12.99 on Barnes & Noble website. 300 color pages of some of the most ornate, rare & valuable guns at the NRA Museum in Fairfax, VA. Many color pages devoted to highly engraved guns, double rifles, shotguns, British & Italian engraved shotguns, Parker Invincibles, etc. I cannot recommend highly enough:
http://www.barnesandnoble.com/w/nra-...=9780785829768