RT Unpublished Material DB /z-wcorg/ DS http://worldcat.org ID 318445743 LA In English. T1 Jean Baptiste Barthe papers, A1 Barthe, Jean Baptiste,, YR 1775 AB Papers include: Ledger, kept at Sault Ste. Marie (1775-1779); Sales book, Sault Ste. Marie, September 4, 1775 - June 1, 1779; Invoice book (1778-1780; arithmetical exercise book. Jean Barthe was a brother-in-law of John Askin, Mackinac and Detroit merchant, and was associated in trade with Askin at his station at Sault Ste. Marie, Michigan.