Allan J. Pinkerton (August 25, 1819 – July 1, 1884) was a Scottish American cooper, abolitionist, detective, and spy, best known for creating the Pinkerton National Detective Agency in the United States and his claim to have foiled a plot in 1861 to assassinate president-elect Abraham Lincoln. During the Civil War, he provided the Union Army – specifically General George B. McClellan of the Army of the Potomac – with military intelligence, including extremely inaccurate enemy troop strength numbers. After the war, his agents played a significant role as strikebreakers – in particular during the Great Railroad Strike of 1877 – a role that Pinkerton men would continue to play after the death of their founder. Early life Allan J. Pinkerton was born in the Gorbals area of Glasgow on August 25, 1819, the son of Isobel McQueen and William Pinkerton. He left school at the age of 10 after his father's death. Pinkerton read voraciously and was largely self-educated. A cooper by trade, he was active in the Scottish Chartist movement as a young man. He was not raised in a religious upbringing, and was a lifelong atheist. Pinkerton emigrated to the United States in 1842. In 1843, he heard of Dundee Township, Illinois, fifty miles northwest of Chicago on the Fox River. He built a cabin and started a cooperage, sending for his wife in Chicago when their cabin was complete. As early as 1844, Pinkerton worked for the Chicago abolitionist leaders, and his Dundee home was a stop on the Underground Railroad. Detective Pinkerton first became interested in criminal detective work while wandering through the wooded groves around Dundee, looking for trees to make barrel staves, when he came across a band of counterfeiters, who may have been affiliated with the notorious Banditti of the Prairie. After observing their movements for some time he informed the local sheriff, who arrested them. This later led to Pinkerton being appointed, in 1849, as the first police detective in Chicago, Cook County, Illinois. In 1850, he partnered with Chicago attorney Edward Rucker in forming the North-Western Police Agency, which later became Pinkerton & Co, and finally Pinkerton National Detective Agency, still in existence today as Pinkerton Consulting and Investigations, a subsidiary of Securitas AB. Pinkerton's business insignia was a wide open eye with the caption "We never sleep." As the US expanded in territory, rail transport increased. Pinkerton's agency solved