About KOSA CBS7KOSA signed on the air on January 1, 1956, and has been a CBS affiliate since its debut. It originally operated from studios located on North Whitaker Street in Odessa. KOSA is the only Big Three station in the Permian Basin to have never changed affiliation. Trigg-Vaughn sold both KOSA along with KDBC-TV in El Paso, Texas to Doubleday Broadcasting in 1967.
From 1956 to 1964, the first KOSA sports anchor was Jim Reese, who was elected mayor of Odessa in 1968 and served until 1974. Doubleday sold the station to Forward Communications in 1973. Reese is now the owner of Penatek Industries of Odessa and has been involved in Republican political activities, particularly between 1964 and 1982.