The tombs of St. Peter and St. Paul. / Engelbert Kirschbaum ; translated from the German by John Murray.. - Kirschbaum, Engelbert, S.I., 1902-1970. (OLS)http://pul/name/304; Murray, John Courtney, S.I., 1904-1967. (OLS)http://pul/name/21070 (Secker and Warburg, 1959)