To His Excellency Genl. Washington : Commander in Chief of the armies of the United States of America, this plan of the investment of York and Gloucester has been surveyed and laid down / and is most humbly dedicated by His Excellency's obedient servant, Sebastn. Bauman, major of the New York or 2nd Regt of Artillery ; this plan was taken between the 22nd & 28th of October, 1781. R. Scot, sculp.