Two letters from H. H. Pius VI. to the Bishop of Leon, and the prelates of Germany. To which are added a letter from Cardinal Antonelli Prefect of the Congregation of Propaganda Fide, by order of H. H. to the bishops, vicars apostolic, etc. of the Church

Two letters from H. H. Pius VI. to the Bishop of Leon, and the prelates of Germany. To which are added a letter from Cardinal Antonelli Prefect of the Congregation of Propaganda Fide, by order of H. H. to the bishops, vicars apostolic, etc. of the Church (Online)