1956 – The Manifesto antiestetico (Antiaesthetic Manifesto) signed by Ralph Rumney, Mario Bionda and Costantino Guenzi was presented for the first time at the Galleria Apollinaire in Milan, during the exhibition Mario Bionda e Ralph Rumney.
1956 – The Manifesto antiestetico (Antiaesthetic Manifesto) signed by Ralph Rumney, Mario Bionda and Costantino Guenzi was presented for the first time at the Galleria Apollinaire in Milan, during the exhibition Mario Bionda e Ralph Rumney.