This manuscript map of Lake St. Clair, in modern-day Michigan and Ontario, was surveyed under the commission appointed for the 6th article of the Treaty of Ghent, to determine the boundary up the St. Lawrence River onto Sault St. Marie.

This map is part of a larger archival collection (Coll. 26), which is completely digitized. To search the entire collection visit our Beyond Borders search page.

To learn more about the Barclay Collection or MHS's Beyond Borders project, please visit our project website.