The opening credits end with this warning: «Tutti le scene del film sono state girate dal vero e ispirate e riferite alla realtà. Ogni riferimento a fatti e a personne NON è casuele.» (All the scenes of this film were turned live. and inspired and referred to real life. All references to facts and people are NOT coincidences.)
Italian censorship visa # 52082 delivered on 31 July 1968.