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. "March 1950," Federal Reserve Bulletin (March 1950) : 86-86. https://fraser.stlouisfed.org/title/62/item/21183/toc/164631 , accessed on April 18, 2024.