Cloud 68Paper Voice pays homage to the European radical movements in architecture that flourished between the 1950s and 1970s producing a wide range of experimental expression. From the personal collection of the Chilean architect Smiljan Radic, a selection of 173 graphic pieceslithographs, drawings, original etchings, and ephemerawill show the horizon of meaning of the diverse architectural approaches from those years: works by Constant, Guy Debord, Asger Jorn, Haus-Rucker-Co, Archigram, Utopie, and Superstudio, among others, will meet in 33 panels that recall Aby Warburgs Mnemosyne Atlas. The publication is complemented by a Wunderkammer of interview fragments by the critic and curator Hans Ulrich Obrist, who interviewed the protagonists of said architecture.