[Footnote 56: In locating the works in New York City, the writer follows the list of batteries reported March 24th, 1776 (Force, 4th Series, vol. v., p. 480); Putnam's order of May 22d, naming the several works; Knox's artillery returns of June 10th, giving the number of guns in each; and Hills' map of the fortifications, drawn at the close of the war. The first list shows the works as they stood at about the time the Boston troops came down, and which Lee had planned. There are alterations and additions in Putnam's and Knox's lists, which are to be followed where they differ from the list of March 24th. Although many other works were erected, no names appear to have been attached to them, those only being designated which occupied the most important points and were provided with guns and garrisons. The Hills map is indispensable in this connection. John Hills, formerly a British engineer, surveyed the city and island of New York as far as Thirty-fourth Street in 1782, and in 1785 made a careful map of the same, which John Lozier, Esq., presented to the Common Council in 1847. This is still preserved, and is consulted at times for official purposes. In addition to giving all the streets, blocks, docks, and squares, Hills added all the works thrown up in and around the city during the Revolution, giving their exact location and shape. Part of the lines have a confused appearance, but they become clear on referring to the following memorandum on the map: "All the works colored yellow were erected by the Forces of the United States in 1776. Those works colored Orange were erected by Do and repaired by the British Forces. Those works colored Green were erected by the British Forces during the War." In the map of New York accompanying the present work, Hills' "yellow" line has been followed, showing all the American forts. Their location corresponds precisely with that which Putnam gives, so far as he names them; and by projecting the present streets over Hills' plan, it is possible to ascertain where they stood in the plan of our modern city.]