Board of Governors of the Federal Reserve System (U.S.), 1935-. "Approval of application of MidAmerican Corporation to retain shares of MidAmerican Insurance Agency, Inc." in Press Releases of the Board of Governors of the Federal Reserve System
(May 31, 1990).
https://fraser.stlouisfed.org/title/9237/item/691764, accessed on January 6, 2026.