Photo, 1959 International collaboration between artists and architects in the realisation of the new Gelsenkirchen Opera House
Artwork, 1962 Transfer of a Zone of Immaterial Pictorial Sensibility to Claude Pascal. Series n°1, Zone 06
Photo, 1959 Inauguration of the Gelsenkirchen Opera Theater in the presence of Jean Tinguely and Yves Klein
Photo, 1961 Yves Klein and his sculpture Piège bleu pour lignes [Blue Trap for Lines] (S 14) during the exhibition "Yves Klein Monochrome und Feuer"