The prisoners' memoirs : or, Dartmoor prison; containing a complete and impartial history of the entire captivity of the Americans in England, from the commencement of the late war between the United States and Great Britain, until all prisoners were released by the treaty of Ghent. Also, a particular detail of all occurrences relative to that horrid massacre at Dartmoor, on the fatal evening of the 6th of April, 1815 /