ISBN 0-689-31628-3*The Record of Connecticut Men in the Military and Naval Service During the American Revolution, by the Connecticut Historical Society*Lefkowitz, Arthur S. "Bushnell's Submarine" - The Best Kept Secret of the American Revolution.
ISBN 0-689-31628-3* The Record of Connecticut Men in the Military and Naval Service During the American Revolution, by the Connecticut Historical Society* Wikipedia: USS Sumner (AGS-5)* Lefkowitz, Arthur S. «Bushnell’s Submarine» — The Best Kept Secret of the American Revolution.