Board of Governors of the Federal Reserve System (U.S.), 1935-. "Operational changes to Reserve Banks automated clearing house (ACH) mechanism that are designed to reduce risk approved" in Press Releases of the Board of Governors of the Federal Reserve System
(December 22, 1987).
https://fraser.stlouisfed.org/title/9237/item/691347, accessed on March 14, 2026.