| Repository | Archives of the Archbishop of Westminster |
| Ref No | AAW/DOW/AP/1/2/123 |
| Title | Apostolic Letter regarding Establishment of New Dioceses |
| Date | September 1850 |
| Level | Item |
| Description | Authorisation from Pope Pius P.P.IX to create the new Sees of England and Wales within the new Hierarchy of Dioceses. |
| Format | Manuscript |
| Language | Latin |