Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Federal Reserve Board Indexes of Production, Employment, and Trade," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "October 1927," Federal Reserve Bulletin (October 1927) : 17-17. https://fraser.stlouisfed.org/title/62/item/20670/toc/350486 , accessed on April 23, 2024.