Important Internet Links The links below will open the institution website home page in a new browser window. Internal Revenue Service (IRS) Missouri Department of Revenue Kansas Department of Revenue 749 Driskill DriveRichmond, MO 64085Phone: 816-776-3584KC Phone: 816-470-3584Fax: 816-470-7100 Two Locations to Better Serve Our Clients 306 N. MasonCarrollton, MO 64633Phone: 660-542-0102Fax: 660-542-3959