Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Ratio of Collections to Accounts Receivable," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "November 1951," Federal Reserve Bulletin (November 1951) : 82-82. https://fraser.stlouisfed.org/title/62/item/21203/toc/264877 , accessed on April 23, 2024.