The Pinkerton National Detective Agency was a private U.S. security guard and detective agency established by Allan Pinkerton in 1850. Pinkerton became famous when he claimed to have foiled a plot to assassinate president-elect Abraham Lincoln, who later hired Pinkerton agents for his personal security during the Civil War.
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The Pinkerton National Detective Agency was a private U.S. security guard and detective agency established by Allan Pinkerton in 1850. Pinkerton became famous when he claimed to have foiled a plot to assassinate president-elect Abraham Lincoln, who later hired Pinkerton agents for his personal security during the Civil War.

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