A narrative of the captivity of Col. Ethan Allen : from the time of his being taken by the British, near Montreal, on the 25th day of September, in the year 1775, to the time of his exchange, on the 6th day of May, 1778. Containing his voyages and travels, with the most remarkable occurrences respecting himself, and many other continental prisoners ... particularly the destruction of the prisoners at New-York, by General Sir William Howe, in the years 1776 and 1777; interspersed with some political observations /