Title: Upper Canada Land Petitions (1763-1865)
Jean Baptiste Barthe, Junior, of the Township of Sandwich, in the Western District, ...he is a native of Detroit, and from his birth, has constantly resided either there, or at the post of Michilimackinac....
Jean Baptiste Barthe papers, 1775-1780.Summary: 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.