Ball at one time or another had five of his own men working on the mill: Thomas Ball for 38½ days, Richard Talbott for 31 days, John Grinstead for 24½ days, Reason Porter for 19½ days, and Edward Todd for 9 days. The helper who came this day was probably Grinstead, Porter, or Todd. Ball himself worked for 38 days on the mill (General Ledger A description begins General Ledger A, 1750–1772. Library of Congress, George Washington Papers, Series 5, Financial Papers. description ends , folio 324).