Revolutionary War–dated partly-printed DS, signed “Go: Washington,” one page, 9.5 x 7, December 31, 1782. A discharge issued from Washington’s headquarters at Newburgh, New York. In full: “By His Excellency General Washington, Commander in Chief of the Armies of the United States, &c. John McKinnie of the Regiment of Invalids having been certifyed by a Board of Officers appointed for the Examination of the Invalids of the Army, as unfit for any further Duty either in the Field or Garrison, Reduced by long sickness is hereby discharged from the Service of the United States.” Handsomely archivally double-matted and framed with an engraved portrait to an overall size of 23.5 x 14.5. In very good condition, with separated intersecting folds (one vertical fold passing through the “W” in his signature), various small areas of paper loss, small tears to edges, and a few stains; the document has been professionally restored and reinforced with a backing of archival tissue. The Continental Congress established the Invalid Corps in 1777, composed of veterans who had become unfit for field duty but could still usefully serve as guards for magazines, hospitals, and similar installations. An extraordinarily desirable piece from Washington’s famed military career. RR Auction COA.