United States. Department of the Treasury. "Report on the Finances, November 1807," Annual Report of the Secretary of the Treasury on the State of the Finances (1807). https://fraser.stlouisfed.org/scribd/?item_id=5646&filepath=/files/docs/publications/treasar/AR_TREASURY_1807.pdf, accessed on November 19, 2017.
Extracted from Reports of the Secretary of the Treasury of the United States... Vol. I