Federal Reserve Bank of St. Louis. "Check 21 Encourages Efficiency in Check Processing," in Federal Reserve Bank of St. Louis. "Central Banker, Winter 2003," Central Banker : News and Views for Eighth District Bankers (January 2003) : 1-1. https://fraser.stlouisfed.org/title/6284/item/603080/toc/586341 , accessed on May 6, 2024.