Board of Governors of the Federal Reserve System (U.S.), 1935-. "Denial of merger of First Interstate BancSystem of Montana, Inc. with Commerce BancShares of Wyoming" in Press Releases of the Board of Governors of the Federal Reserve System (October 7, 1991). https://fraser.stlouisfed.org/title/9237/item/692193, accessed on May 10, 2026.