United States. Department of the Treasury. "Frauds upon the Revenue," in United States. Department of the Treasury. "Finance Report: Report of the Secretary of the Treasury, Showing the Receipts and Expenditures, &c., for the Fiscal Year Ending June 30, 1850," Annual Report of the Secretary of the Treasury on the State of the Finances (1850) : 10-11. https://fraser.stlouisfed.org/title/194/item/5496/toc/79532 , accessed on April 23, 2024.