A Day in Ancient Rome. Edgar S. Shumway. P. 9.
Rome of To-day and Yesterday. John Dennie. P. 283.
Rome: The Eternal City. Clara Erskine Clement. Vol. i, p. 249.
Walks in Rome. Augustus J. C. Hare. P. 541.
Lord Byron's Description of the Pantheon.
Rome: The Eternal City. Clara Erskine Clement. Vol. i, p. 251.
Childe Harold. Lord Byron. Canto iv, cxlvi.
The Coliseum.
The Life of the Greeks and the Romans. Guhl and Koner. P. 434
Ancient Rome in the Light of Recent Discoveries. Rodolfo Lanciani. Pp. 125, 158.