United States. General Accounting Office and United States. Government Accountability Office. "The Federal Reserve : Information on the System's Check Collection Service, Report to the Chairman, Subcommittee on Commerce, Consumer, and Monetary Affairs, Committee on Government Operations, House of Representatives" in GAO Reports & Testimonies (December 1989). https://fraser.stlouisfed.org/title/6136/item/622189, accessed on May 24, 2025.