L, NjP, Andre de Coppet Collection (C0063), John Cushing and Samuel White Papers, 1775–1787, Papers relating to the Minerva. Addressed below close: “Messrs Cushing & White—." Addressed on cover: "Messrs Cushing & White/Merchts/Boston." Docketed: "Mr. Jacob Sheaff's letter/June 22d. 1778."