1951 Clarksville, Tennessee

1972 Knoxville

1979 Paris

1980 Smoky Mountains

1983 Magny-lès-Villers, Burgandy

1987 Birmingham

1991 Knoxville © David Luttrell

1991 Knoxville © David Luttrell

2016 Dongcheng, Beijing

2017 Knoxville

2011 Paris © Philippe Vermès