United States. Department of the Treasury. "Report of the Second Comptroller," in United States. Department of the Treasury. "Report of the Secretary of the Treasury on the State of the Finances for the Year Ending June 30, 1857," Annual Report of the Secretary of the Treasury on the State of the Finances (1857) : 171-173. https://fraser.stlouisfed.org/title/194/item/5503/toc/268382 , accessed on May 13, 2024.