Pinkerton (detective agency)

Pinkerton is an American private investigation agency and security company established around 1850 in the United States by Scottish-born American cooper Allan Pinkerton and Chicago attorney Edward Rucker as the North-Western Police Agency, which later became Pinkerton & Co. and finally the Pinkerton National Detective Agency.

Tom Horn

Thomas Horn Jr., (November 21, 1861 – November 20, 1903) was an American cowboy, scout, soldier, range detective, rodeo performer, and Pinkerton agent in the 19th-century and early 20th-century American Old West.