Article Photos: Woody Guthrie's sister to sign copies of her new book about him Thursday in Shawnee 1/2

 Hugh Edgmon, of Scottsville, Ariz., embraces his mother, Mary Jo Guthrie at her surprise party during the Woody Guthrie Folk Festival in Okemah, Okla., Thursday, July 12, 2012. Photo by Garett Fisbeck, The Oklahoman