Díaz Burillo, Vicente Jesús. “The Photograph of Pío IX. A Visual History Otuline of the Contemporary Papacy”. Accadere. Journal of Art History, no. 4 (December 20, 2022): 95–109. Accessed November 11, 2026. https://www.ull.es/revistas/index.php/accadere/article/view/4608.