A dear family friend, Dan C. "Sonny" Mayfield could have made the saddles.
While attending Harlandale High School he participated in their vocational program, he was employed by Shirley Brown's Corral Shop, located in the Joske's downtown store. There he learned the art and craft of custom saddlery. A renowned custom saddle maker he produced all the trophy saddles for the San Antonio Stock Show and Rodeo from 1950 to 1977, when he left The Corral Shop and became self-employed. His saddles could be spotted in movies, the tack rooms of many south Texas ranches and professional cowboys.
Here's a clip from his obituary in 2018 in San Antonio:
