) was a U.S. detective. He was born in Glasgow, Scotland
on August 25
, 1819 and emigrated to U.S. in 1842
. In Chicago, Illinois
, he formed the first detective
agency, Pinkerton Agency
, which solved a series of train robberies. He was head of US Secret Service
and foiled an assassination plot in Baltimore, Maryland
, while guarding Abraham Lincoln
on his way to his inauguration for his first term as president of the U.S.
He died in Chicago, Illinois, on July 1, 1884.
See American Civil War spies