This page has been validated.
PUBLISHERS' NOTE
The illustrations are taken from photographs of parts of the Vatican not usually shown to visitors, reproductions of prints of Old St. Peter's and the treasures of the Crypt; and various plans of the Vatican and the Crypt to explain the gradual growth of the Palace and Cathedral of the Popes from the date of St. Peter's Martyrdom—a.d.—67 to our own day.
It will be noted also that the museums, picture galleries, and the like, for the reason mentioned above, and to keep the book within handbook limits, are only alluded to incidentally.
vi
