Board of Governors of the Federal Reserve System (U.S.), 1935-. "Approval of applications of Napa Valley Bancorp for Bank of Lake County, N.A., and Sonoma Valley Bank" in Press Releases of the Board of Governors of the Federal Reserve System
(May 4, 1988).
https://fraser.stlouisfed.org/title/9237/item/691404, accessed on January 6, 2026.