United States. Department of the Treasury. "United States Monetary History - Acts of 1873 and 1878 Alike and Irrelevant," in United States. Department of the Treasury. "Annual Report of the Secretary of the Treasury on the State of the Finances for the Year 1886, Volume I: Finance," Annual Report of the Secretary of the Treasury on the State of the Finances (1886) : 28-29. https://fraser.stlouisfed.org/title/194/item/5532/toc/339691 , accessed on April 23, 2024.