Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Operating Ratios of Member Banks, by Federal Reserve District," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "May 1961," Federal Reserve Bulletin (May 1961) : 105-105. https://fraser.stlouisfed.org/title/62/item/21317/toc/52886 , accessed on April 23, 2024.