United States. General Accounting Office and United States. Government Accountability Office. "U.S. Coins : Replacing the $1 Note With a $1 Coin Would Provide a Financial Benefit to the Government, Report to Congressional Requesters" in GAO Reports & Testimonies (March 4, 2011). https://fraser.stlouisfed.org/title/6136/item/622230, accessed on October 14, 2024.