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 1955," Federal Reserve Bulletin (November 1955) : 52-52. https://fraser.stlouisfed.org/title/62/item/21251/toc/109228 , accessed on March 28, 2024.