Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Index of Building Contracts Awarded," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "September 1931," Federal Reserve Bulletin (September 1931) : 51-51. https://fraser.stlouisfed.org/title/62/item/20717/toc/243928 , accessed on April 18, 2024.