Services for Retha L. “Sis” Langston, 96, of Sulphur, will be held at 1:00 p.m. Thursday, Jan. 12, at Calvary Baptist Church with Rev. Tom Hefley officiating. Burial will be at Oaklawn Cemetery under the direction of DeArman Funeral Home. Born July 30, 1920 in Iona, Oklahoma to Edgar E.