Epistolae encyclicae: ad patriarchas primates archiepiscopos et episcopos universos Catholici orbis gratiam et communionem cum apostolica sede habentes. - Catholic Church. (Herder, 1894)
Latin and German on opposite pages.
Added title- page in German with title: Sämtliche Rundschreiben erlassen von unserem heiligsten Vater Leo XIII ... (v. 2-6 have title: Rundschreiben erlassen von unserem Heiligsten Vater Leo XIII ... )