[Cobra]. Appel, Karel, Claus, Hugo (contrib.), Alvard, Julien (pref.). — Karel Appel. Reliefs 1966-1968. Exposition 1968.

Paris, CNAC (Centre National d'Art Contemporain)/ Ministère des Affaires Culturelles, 1968, (40) pag., portrait, 1 coloured and many b/w illustrations and original colour-illustrated wrappers by Karel Appel. = With a loosely inserted coloured snapshot photograph of a relief by Appel on the street in front of the Museum of Art & Design, New York. Contaisn th etexts: Les monstres d'Appel by Julien Alvard (1968; with a beautiful colour-illustration over two pages); L'aventure totale d'Appel by Michel Tapié (1953); Phénodrame d'Appel by Emmanuel Looten (1956); contributions by Christian Dotremont (1956) and Herbert Read (1957); Appel, peintre de la vie by Stéphane Lupasco (1961); a poem in French on Appel by Willem Sandberg (1963); Mélancolie et fureur d'Appel by Hugo Claus (1965).