Mullooly, J. (1866). A brief notice of the ancient paintings found in the subterranean basilica of S. Clement in Rome: The dates of which vary from the end of the third to about the beginning of the tenth century (2nd ed.). Printed at the Propaganda-Press.

Mullooly, Joseph. A Brief Notice of the Ancient Paintings Found in the Subterranean Basilica of S. Clement in Rome: The Dates of Which Vary from the End of the Third to About the Beginning of the Tenth Century. 2nd ed. Printed at the Propaganda-Press, 1866.