Metzker, Paul F. , Koch, Donald L. and Bennett, Veronica M. "Lumbering at Top Speed: The Check Collection System, 1952-1979," in Federal Reserve Bank of Atlanta. "March 1982, Volume 67, Number 3," Economic Review (Federal Reserve Bank of Atlanta) (March 1982) : 29-33. https://fraser.stlouisfed.org/title/884/item/35028/toc/391828 , accessed on December 7, 2023.