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HRH Princess Anne, The Princess Royal aboard Goodwill during the Mixed Three-Day Event Team Cross-Country at the XXI Olympic Summer Games on 24 July 1976 at the Olympic Equestrian Centre, Bromont, Québec, Canada. (Photo by Getty Images)

HRH Princess Anne, The Princess Royal aboard Goodwill during the Mixed Three-Day Event Team Cross-Country at the XXI Olympic Summer Games on 24 July 1976 at the Olympic Equestrian Centre, Bromont, Québec, Canada. (Photo by Getty Images)