The Hayden Liberty Center presents Once Upon a Mattress will be held on Tuesday, May 27, and Wednesday, May 28, at 7:30 PM and Thursday, May 29, at 2:00 PM at the Hayden Liberty Center in Sedalia. Adults $12, children 11 and younger $9. For more information, visit www.LibertyCenterSedalia.com or call 660-827-2900