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. "June 1956," Federal Reserve Bulletin (June 1956) : 82-82. https://fraser.stlouisfed.org/title/62/item/21258/toc/204244 , accessed on May 10, 2024.