Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "May 31, 1957," H.4.1 Factors Affecting Bank Reserves and Condition Statement of F.R. Banks (May 31, 1957). https://fraser.stlouisfed.org/scribd/?item_id=492187&filepath=/files/docs/releases/h41/h41_19570531.pdf&start_page=1, accessed on August 18, 2017.
Board of Governors of the Federal Reserve System