signed, making it one of the most ambitious contemporary art publications of the 20th century. Signed works and texts include those by Raymond HAINS, Piero MANZONI, Victor VASARELY, Lucio FONTANA, Jean ARP, ARMAN, Eugène IONESCO, Marcel BÉALU, Lucien CLERGUE, Pierre-André BENOÎT, Enrico BAJ, Camille BRYEN and others. Lucio Fontana's signed work is unique and therefore different in each copy, as are those by Raymond Hains and Hundertwasser