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. "August 1956," Federal Reserve Bulletin (August 1956) : 90-90. https://fraser.stlouisfed.org/title/62/item/21260/toc/94301 , accessed on March 29, 2024.