Head Quarters New Windsor 22d Feby 1781.
It will be indispensably necessary that we should be informed of the preparations or movements of the Enemy in New York during the absence of the detachment under the command of the Marquis de la Fayette. You will therefore be pleased to employ some of the most trusty persons within your knowledge upon this Business. My principal apprehensions are for the posts up this River—They will therefore pay particular attention to any thing which looks like a move this way—as preparation of Boats—embarkation of Cannon—Stores &ca. There will be a chain of Expresses between Morris Town and this place—you will communicate your intelligence by them. I am Dear Sir Yr most obt Servt