Federal Reserve Bank of St. Louis. "[Announcement Regarding Mercantile Bancorporation Inc., St. Louis, Missouri; Regional Bancshares, Inc., Alton, Illinois; Bank of Alton, Alton, Illinois]," Federal Reserve Bank of St. Louis News Releases (January 15, 1997). https://fraser.stlouisfed.org/title/6265/item/654240, accessed on January 19, 2025.