1123849 A Representation of the Massacre of American Prisoners in Dartmoor Prison, April 6, 1815, c.1845 (coloured engraving) by Hitchcock, DeWitt C. (c.1818-79); Private Collection; (add.info.: From the spring of 1813 until March 1815 about 6500 American sailors were imprisoned at Dartmoor. A disturbance and breakout on the 6th April 1815 led to British soldiers firing upon a large number of prisoners.); The Stapleton Collection; American, out of copyright.