American naval architect (1804–1878) who designed the City class ironclads, also known as ‘Pook Turtles’ due to their distinctive shape, they were the backbone of the Navy on the Mississippi River System during the Civil War. ALS signed “S. M. Pook N. G.,” one page, lightly-lined, 8 x 13, November 11, 1841. Letter to John Sloat, Commander of the Portsmouth Naval Yard regarding the fabrication of knee docks. In part: “Agreeably to your Order, I have made an estimate of the probable cost of dividing the Knee dock at the South Easterly part of the Yard, into five divisions, each fifty feet square.” In fine condition, with horizontal folds and a mild overall shade of toning. RRAuction COA.
