Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "September 7, 1939," H.4.1 Factors Affecting Reserve Balances of Depository Institutions and Condition Statement of Federal Reserve Banks (1939-09-07). https://fraser.stlouisfed.org/title/83/item/65983, accessed on February 4, 2025.