Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Income Ratios of Country 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 1972," Federal Reserve Bulletin (May 1972) : 203-204. https://fraser.stlouisfed.org/title/62/item/21450/toc/56612 , accessed on April 18, 2024.