In this series, A. J. Frothingham Jr. delivers the results of his 1889 tour of 12th and 13th century A.D. Christian buildings. The first section focuses on the schools of Laurentius, and Paulus, identifying artists responsible for the decoration of cathedrals, gardens, and papal tombs by name and connecting them to one or the other school. The second turns to architects, identifying previously unknown designers of Italian cathedrals of the 12th century. The third describes previously unpublished papal tombs (those of Hadrian V and Clement IV) and suggests the artists who may have contributed to the buildings. The final section describes the cloister of the Lateran Basilica and connects it to the school of Laurentius. The entire work sets the groundwork for later discussions of the artistic environment of papal building programs in Italy and includes illustrative pictures to support the text.