Board of Governors of the Federal Reserve System (U.S.), 1935-. "Approval of application of Citicorp to continue to engage in the issuance of travelers checks" in Press Releases of the Board of Governors of the Federal Reserve System
(July 20, 1979).
https://fraser.stlouisfed.org/title/9237/item/694717, accessed on January 15, 2026.