Board of Governors of the Federal Reserve System (U.S.), 1935-. "Approval of application of Ridge Bancorporation of Wisconsin for Northridge Bank and Southridge Bank of Greendale" in Press Releases of the Board of Governors of the Federal Reserve System
(October 18, 1972).
https://fraser.stlouisfed.org/title/9237/item/698805, accessed on January 25, 2026.