The Longhorn League operated as a Class D organization for the 1947 though 1950 seasons The league was upgraded to Class C for the years 1951 through 1955. Artesia, NM: 1951-55 Ballinger, TX: 1947-50, 1953 Big Spring, TX: 1947-52, 1954-55 Carlsbad, NM: 1953-55 Del Rio, TX: 1940 Hobbs, NM: 1955 Lamesa/”Winters-Ballinger”, TX: 1953 Midland, TX: 1947-55 Odessa, TX: 1947-55 Roswell, NM: 1949-55 San Angelo, TX: 1948-55 Sweetwater, TX: 1947-52 Vernon, TX: 1947-52 Wichita Falls/Sweetwater, TX: 1954