The Derringer in America by LD Eberhart and RL Wilson
Both Vol. 1 & 2. Dust jackets show mild wear on corners but otherwise in excellent condition.
From the back:
One of history's most colorful and romantic weapons, the deringer – named after its inventor – more American than apple pie
Favored by riverboat toughs, like the one shown above, and gamblers as well as meeker elements of mid-19th century society, these tiny pistols reigned supreme in American personal weaponry until the invention of the cartridge revolver.
These pages contain the richest storehouse of information and illustration ever put into print on the subject of Henry Deringer and his many copyists.