Board of Governors of the Federal Reserve System (U.S.), 1935-. "Approval of applications of Marshall and Ilsley Corporation for Thunderbird Capital Corporation and Thunderbird Bank" in Press Releases of the Board of Governors of the Federal Reserve System
(August 25, 1986).
https://fraser.stlouisfed.org/title/9237/item/691039, accessed on January 23, 2026.