Federal Reserve Bank of St. Louis. "[Announcement Regarding Arvest Bank Group, Inc., Bentonville, Arkansas; Ameribank Corporation, Shawnee, Oklahoma; United Oklahoma Bancshares, Inc., Del City, Oklahoma; American National Bank and Trust Company of Shawnee, Shawnee, Oklahoma; United Bank, Del City, Oklahoma]," Federal Reserve Bank of St. Louis News Releases (August 13, 1998). https://fraser.stlouisfed.org/title/6265/item/654417, accessed on December 11, 2024.