A friend gave me a copy of Steel Canvas: The Art of American Arms, by R.L. Wilson, and I haven't stopped drooling since. Page after page after glossy, full-color page of engraved, inlayed, and ivoried pistols, long guns, swords, and Bowies. More beautifully-figured wood than you can imagine. A whole herd's worth of carved ivory. Enough gold inlay to unbalance the market. When I say "Gun Pr0n", here, I am not kidding. With a capital "P", no less.
I highly recommend it.