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. "July 1927," Federal Reserve Bulletin (July 1927) : 19-19. https://fraser.stlouisfed.org/title/62/item/20667/toc/76358 , accessed on March 28, 2024.