Michaela Valente has published a review in the famous journal Revue d'Histoire Ecclésiastique about the joint work of Edizioni Sette Città and Vilmos Fraknói Vatican Historical Research Group namely Gli “angeli custodi” delle monarchie: I cardinali protettori delle nazioni. The mentioned joint book has published in Viterbo in 2018. Roman book presentation was in 2019 at Pontificia Università della Santa Crocé.