Major Allan Pinkerton and colleagues of the

Major Allan Pinkerton and colleagues of the Secret Service Department, of the Army of the Potomac at Antietam, Maryland. Seated, L-R: William Moore and Allan Pinkerton. Standing, L-R: George H. Bangs, John C. Babcock, and Augustus K. Littlefield. After the US Civil War, George Bangs became general superintendent of a chain of Pinkerton offices in the US. Photo by Alexander Gardner, Oct. 3, 1862

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Antietam Confidential Espionage Intelligence Lcgr1809 Lcgr2018 Maryland Pinkerton Sharpsburg Surveillance Tents

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