"The Shadow of the Texas Rangers - late 1920's" The Texas Rangers in Fabens, Texas (a suburb of El Paso). This drawing is from an old photo that my grandparents gave me. The shadows were really bad, but I always loved the photo. These Texas Rangers used to board with my grandparents whenever they went to the Texan-Mexican border during prohibition. My father remembers the Texas Rangers staying with them, going with his father to the edge of the Rio Grande River, and leaving money under a rock. The next day, someone from Mexico would wade across the river on a mule to get the money, and leave bottles of booze in a hole under the rock. This is where the term mule came from.