• Frassati USA. “The Life of Pier Giorgio Frassati.” Frassati USA, frassatiusa.org.
• Vatican News. “Pier Giorgio Frassati.” Vatican News, vaticannews.va.
• Franciscan Media. “Saint of the Day: Saint Pier Giorgio Frassati.” Franciscan Media, franciscanmedia.org.
• Catholic News Agency. “Miraculous Cure of Former Atheist, Now Priest, Clinches Canonization of Pier Giorgio Frassati.” Catholic News Agency, catholicnewsagency.com, Dec. 2024.
• Catholic News Agency. “Pope Leo XIV Canonizes Carlo Acutis and Pier Giorgio Frassati.” Catholic News Agency, catholicnewsagency.com, Sept. 7, 2025.

Slides are written from The Acutis Project research packet for St. Pier Giorgio Frassati, which draws on the sources above. Photo credits appear on each picture.