Joël and his twin brother [Jan Martel] participated in the sculpturing category at the 1948 London Olympic Games in the Art Competitions, Jan with Polo Player (Plaster) and Joël with Bicycling Trophy (Aluminium). They were among the founding members of the Union des Artistes Modernes, and were both best-known for their ornamental sculptures, statues, monuments and fountains displaying characteristics typical of the Art Déco and Cubist periods, which included a monument to the great French composer and musician Claude Debussy. Their avant-garde sculptures for their four concrete Cubist )trees) designed for a garden setting at the 1925 Exposition des Arts Décoratifs et Industriels Modernes in Paris became especially well-known. Both died in 1966, about six months apart from one another, Joël as the result of a long struggling illness and Jan in an accident.
Mixed Sculpturing, Statues