American naval officer (1780–1843) who led the first capture of a British vessel during the War of 1812 and who later served as commander-in-chief of the Mexican Navy. ALS signed “D. Porter,” one page, 7.75 x 9.75, December 15, 1817. Letter to an unknown recipient, headed at the top “To be Sold Cheap.” In part: “Eight excellent work horses…marked in the Harre Boat which plied between George Town and Alexandria—They may be seen at the Stable on Meridian Hill.” Intersecting folds, one through a single letter of signature, some paper loss to edges, and a couple of creases, otherwise fine condition. RR Auction COA.