Allan Pinkerton

Allan Pinkerton was a Scottish-American detective and spy who founded the Pinkerton National Detective Agency in 1850. Known for pioneering private security and investigative services, Pinkerton's agency became famous for solving crimes, protecting trains, and providing intelligence during the Civil War. They often used innovative techniques for the time, such as undercover agents and surveillance. Pinkerton's work helped shape modern private security and investigative practices, and his agency's name became synonymous with detective work in the United States.