Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Business Indexes," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "June 1952," Federal Reserve Bulletin (June 1952) : 95-95. https://fraser.stlouisfed.org/title/62/item/21210/toc/432152 , accessed on May 7, 2024.