1815 Commonwealth Of Massachusetts Governor Signed Document. Caleb Strong – Governor And Commander In Chief. Isaac Goodwin – Esquire. Notary Public And Justice Of The Peace Within And For The County Of Worcester. Was elected to the inaugural United States Senate and played an influential role in the development of the United States Constitution at the 1788 Philadelphia Convention. He was politically active in the rebel cause during the American Revolution. Measures 10″ X 16″. Fragile worn condition from age and wear with toning/soiling and edge and fold tears. Still a gem despite condition. Please see scans/photos for condition. This item is in the category “Collectibles\Autographs\Historical”. The seller is “jodieandtony” and is located in this country: US.