_  Arthur Seeligson, a native of San Antonio, was involved in Thoroughbred horse racing for over thirty years. He was a prominent breeder and owner of quality race horses and had stakes winners in both the United States and Europe. He most notably bred and raced Avatar, winner of the 1975 Santa Anita Derby and the Belmont Stakes. Avatar's half-brother, Unconscious, also was a major winner for Seeligson and ran fifth in the 1971 Kentucky Derby. His big win came in the Charles H. Strub Stakes as a 4-year-old. Seeligson bought the half-brother's dam, Brown Berry, when she was carrying Unconscious. Brown Berry also produced French group winner Monseigneur for Seeligson.

        Seeligson was a leader in the movement to bring Thoroughbred racing to Texas in the 1960s and 1970s, serving as Chairman of the Texas Horse Racing Association in the 1960s and continuing to serve on the Executive Committee throughout the 1970s. For a time, Mr. Seeligson was a co-owner of Hialeah Park Racetrack in Hialeah, Florida. He was a member of the Board of Directors of the National Museum of Racing and Hall of Fame in Saratoga Springs, New York.