The City of St. Clair was first settled under the British flag in the 1700's by British Army Lieutenant, Patrick Sinclair. After the War of Independence, the City of Sinclair, as it was then known, was renamed in honor of the first American general in command of the Northwest Territory, General Arthur St. Clair. The city became famous for sawmills, shipbuilding and salt mines during the mid-19th century and became incorporated as a city in 1858.

Our department is seeking any form of archival material pertaining to the history of our department. If you know of or have any material you may wish to loan this department please contact us by phone or email. All materials will be promptly returned to the rightful owner. We appreciate your interest and assistance.