L, NHi, NHSC: Gustavus Conyngham Papers. Translation from Letters and Papers Relating to the Cruises of Gustavus Conyngham, A Captain of the Continental Navy, 1777-1779, edited by Robert Wilden Neeser (New York: Naval Historical Society, 1915), p. 115. Addressed: "Messieurs/Messieurs Lassore freres & Ce./Negts/a Cadiz."; "Messieurs Lassore brothers and Co., merchants at Cadiz."