The collective volume Unus non sufficit orbis". Roma e le missioni europee nel secondo Seicento has been published as the 13th volume in the Studi di storia delle istituzioni ecclesiastiche series by Sette Città, edited by Alessandro Boccolini, Massimo Carlo Giannini, Giovanni Pizzorusso, and Péter Tusor.
The volume contains the written versions of the papers delivered at the international conference “Unus non sufficit orbis”: Roma e le missioni europee nel secondo Seicento, held online on 12 December 2025 under the organisation of Pázmány Péter Catholic University, in collaboration with the Istituto Nazionale di Studi Romani (INSR), several Italian universities, and the Fraknói Research Group. The conference was connected to the critical edition of the key 1678 report by the Secretary of the Congregation for the Propagation of the Faith (Relazione di Monsignor Urbano Cerri alla Santità di N. S. Papa Innocenzo XI dello Stato di Propaganda). A detailed description of the project is available here.
A long-standing and close working relationship exists between the Fraknói Research Group and the INSR, in particular with its director Gaetano Platania, as well as with the Centre for Central European and Papal History at the University of Tuscia in Viterbo (Professors Matteo Sanfilippo and Alessandro Boccolini). The principal milestones of this collaboration are the jointly organised international symposia. These include, most recently, the conference series Barberini e l'Europa and I Collegi per stranieri a Roma (16th–20th centuries), as well as the scholarly conference held on the occasion of the Fraknói centenary, Protagonisti e Collaboratori – Studiosi provenienti dall’Europa centro-orientale presso gli archivi della Santa Sede tra il 1881 e il 1918 (see here for its Roman reception). The papers presented at these conferences have been published, with the participation of the Research Group, in the form of edited volumes by Edizioni Sette Città (Viterbo), and are available there.
(A full list of joint conferences: 2007 Rome [proceedings: CVH I/4], 2013 Budapest, 2018 Budapest, 2019 Rome, 2021 Rome, 2022 Rome, 2023 Rome, 2024 Rome.)
The volume can be freely accessed and downloaded here.