The subseries consists of records that document the relationship between the Catholic Archdiocese of Edmonton and the Holy See and includes information files on the Vatican, Holy See and Rome as well as information files on each of the popes, records related to the church councils (such as Vatican II), the Synod of Bishops and Canadian Cardinals.

The file contains correspondence between Archbishop MacNeil and the Canadian Ambassador to the Holy See regarding the appointment of the new Ambassador, Mr. Yvon Beaulne.

The file consists of general information Holy See, Rome and the Vatican and is arranged into the following three folders:

1.1.0.1 : Holy See General Information
1.1.0.2 : Rome Diocesan Synod, 1960
1.1.0.3 : Rome General Information

The subseries consists of records that document the relationship between the Catholic Archdiocese of Edmonton and the Sacred Congregation includes records related to the roman curia, sacred congregations, tribunals, pontifical councils, pontifical commissions, pontifical committees, institutes connected with the holy sees, institutes of graduate studies in Rome and seminaries and national college in Rome.