United States. Department of the Treasury. "Table Giving Analysis of the History of the United States Monetary Unit," in United States. Department of the Treasury. "Annual Report of the Secretary of the Treasury on the State of the Finances for the Year 1885, Volume I: Finance," Annual Report of the Secretary of the Treasury on the State of the Finances (1885) : 23-34. https://fraser.stlouisfed.org/title/194/item/5530/toc/258705 , accessed on April 19, 2024.