General McClellan's headquarters, Antietam, Maryland, American Civil War Size:L: 70 x 70cm View of the old lime

View of the old lime works

6 May 1859 (1901)

and had been Pitt's tutor

20 April 1917

General McClellan's headquarters, Antietam, Maryland, American Civil War Size:L: 70 x 70cm View of the old limeGeneral McClellan's headquarters, Antietam, Maryland, American Civil War, 1861 1862 (1955). Only a few federal officers knew that the man seated with a cigar in his hand was Allan Pinkerton, founder of the famous detective agency. Pinkerton, who organized the Union intelligence service, was known only as 'Major Allen'. Directly behind him is John C Babcock, who worked under Pinkerton. Next to him is George H Bangs, later a famous Pinkerton