Federal Reserve Bank of St. Louis. "[Announcement Regarding Arvest Bank, Fayetteville, Arkansas; WestStar Bank, Bartlesville, Oklahoma; Arvest Bank, Shawnee, Oklahoma; Arvest Bank, Duncan, Oklahoma; Arvest Bank, Norman, Oklahoma]," Federal Reserve Bank of St. Louis News Releases (March 22, 2002). https://fraser.stlouisfed.org/title/6265/item/654619, accessed on December 22, 2024.