Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Index of Wholesale Distribution - Nine Lines of Trade," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "September 1928," Federal Reserve Bulletin (September 1928) : 26-26. https://fraser.stlouisfed.org/title/62/item/20681/toc/131326 , accessed on March 29, 2024.