Board of Governors of the Federal Reserve System (U.S.), 1935-. "Number of Commercial Banks and Branches," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "1972-1976," Annual Statistical Digest (December 1977) : 315-315. https://fraser.stlouisfed.org/title/7/item/23503/toc/117698 , accessed on April 25, 2024.