United States. General Accounting Office
and United States. Government Accountability Office. "U.S. Coins : The Federal Reserve Banks Are Fulfilling Coin Demand, but Optimal Inventory Ranges Are Undefined, Report to the Subcommittee on Domestic and International Monetary Policy, Trade, and Technology, Committee on Financial Services, House of Representatives" in GAO Reports & Testimonies
(March 21, 2008).
https://fraser.stlouisfed.org/title/6136/item/622213, accessed on July 14, 2025.