Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Revision of Bank Credit Series," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "July 1966," Federal Reserve Bulletin (July 1966) : 18-23. https://fraser.stlouisfed.org/title/62/item/21379/toc/228422 , accessed on March 28, 2024.