See this free ebook:

  • The Martyrdom of St. Peter and St. Paul, by Arthur Stapylton Barnes, with a Foreword by William Henry Cardinal O’Connell (London: Oxford University Press, Humphrey Milford, 1933). Available in various formats at Internet Archive.

On the Feast of the Dedication of the Basilicas of Saints Peter and Paul in the Extraordinary Form of the Roman Rite.