Mergel OSB, Johannes Leo von (Taufname: Johannes), [Hirtenbrief]in: Pastoralblatt des Bistums Eichstätt, Nr.2, S.6-8 from 30 January 1924, attachment, in: 'Kritische Online-Edition der Nuntiaturberichte Eugenio Pacellis (1917-1929)', document no. 15932, URL: www.pacelli-edition.de/en/Document/15932. Last access: 24-05-2024.Online since 18-09-2015, last modification 01-09-2016.