In Okemah, 1-10pm. Past performers have included Arlo Guthrie, Pete Seeger, Jackson Browne, Ramblin' Jack Elliott, Jimmy LaFave, the Red Dirt Rangers, Ellis Paul and many more. Over 100 artists will be performing. Festivities include both indoor and outdoor concerts, panel discussions, special activities for children, open microphone events, spontaneous hootenannies, and community outreach activities. No admission to any of the stages Thu-Sun, tickets are required to the Wed evening performance. 918-650-2825, http://www.woodyguthrie.com