United States. Department of the Treasury. "Report on the Finances, December 1808," Annual Report of the Secretary of the Treasury on the State of the Finances (1808). https://fraser.stlouisfed.org/scribd/?item_id=5647&filepath=/files/docs/publications/treasar/AR_TREASURY_1808.pdf, accessed on December 14, 2017.
Extracted from Reports of the Secretary of the Treasury of the United States... Vol. I