Business envelope printed with address details for the C.D.O. (Centro Documentazione Organizzazione, Center for Document Organization) art archive and mail art space. Rubber stamp in red ink: cartoon frame with a woman talking on the phone about the 1st international mail-art manifesto. Rubber stamp in purple ink: "STAMPA". A4 sheet enclosed. Typewritten letter inviting contributions to an international mail art exhibition to be held at the Sala Esposizioni E.P.T. in Reggio Emilia, near Parma, November 6 to December 2 1982. Perfect bound catalog including critical texts in Italian, list of participants, and reproduction of works. Cover fragment. Torn cover ornamented with rubber stamp in purple ink: circular seal design with a pig at center and "I PORCI COMODI". CDS dated November 12 1982, possibly contained catalog.