»The Pistol As A Weapon of Defense In The House And On The Road, (1875), author unknown, Paladin Press, Boulder, CO, (Reprint) 2004, ISBN 1-58160-432-7
Amazon plug: "Written in 1875, this may be the first book ever published on the practical use of the pistol for self-defense. It contains remarkably modern advice on realistic handgun stopping power, effective shot placement, the practicality of pistol carry and much more. With an exclusive foreword by Jeff Cooper."
I found this rather rare little volume years ago and persuaded Paladin Press to reprint it a few years back. Cooper was rather taken with it and wrote an introduction to it.