Martin trained the World Grand Champion Shades of Carbon, and was Tennessee Walking Horse Trainer of the Year in 1976.
Winston Wiser was a notable Tennessee Walking Horse trainer who won five World Grand Championships on three horses, including Merry Go Boy and Go Boy's Shadow.
[2] Originally ridden in shows by Joe Martin, Shades of Carbon won the Two-Year-Old World Championship at the Tennessee Walking Horse National Celebration in 1972.
[4] Shades of Carbon won the World Grand Championship in 1976, making Martin only the second woman to win the stake,[2][5] after Betty Sain in 1966.
[6] After her World Grand Championship, Martin continued to train and compete in the Celebration.