Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Index Numbers of Security Prices," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "April 1925," Federal Reserve Bulletin (April 1925) : 14-14. https://fraser.stlouisfed.org/title/62/item/20571/toc/273315 , accessed on April 18, 2024.