United States. Department of the Treasury. "Report on the Finances, June 1841; Report on the Finances, December 1841," Annual Report of the Secretary of the Treasury on the State of the Finances (1841). https://fraser.stlouisfed.org/title/194/item/5486, accessed on January 17, 2019.
Extracted from Reports of the Secretary of the Treasury of the United States... Vol. IV