See this legally free ebook:
- St. Peter in Rome and His Tomb on the Vatican Hill, by Arthur Stapylton Barnes (London, Swan Sonnenschein & Co., 1900), With Imprimatur. Available in multiple formats (pdf, plain text, DAISY, epub, djvu, and mobi/Kindle) at Internet Archive and Open Library.
On the Feast of the Chair of St. Peter in Rome in the Extraordinary Form of the Roman Rite. For other legally free ebooks, you may access the List of Free eBooks (Arranged by Title) and the List of Free eBooks (Grouped by Subject).
O God, our refuge and our strength, look down with mercy upon the people who cry to Thee; and by the intercession of the glorious and immaculate Virgin Mary, Mother of God, of Saint Joseph her spouse, of the blessed Apostles Peter and Paul, and of all the saints, in Thy mercy and goodness hear our prayers for the conversion of sinners, and for the liberty and exaltation of the Holy Mother the Church. Through the same Christ Our Lord. Amen. (From Sancta Missa)