Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Freight-Car Loadings, by Classes," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "December 1946," Federal Reserve Bulletin (December 1946) : 81-81. https://fraser.stlouisfed.org/title/62/item/21144/toc/96846 , accessed on March 28, 2024.