Roba di Roma. William W. Story. Chap. ix.
The Marble Faun. Nathaniel Hawthorne. Chap. xvii.
Dickens' Visit to the Coliseum.
Pictures from Italy. Charles Dickens. P. iii.
Hawthorne's Impressions of the Arch of Titus.
A Day in Ancient Rome. Edgar S. Shumway. P. 54.
Rome: The Eternal City. Clara Erskine Clement. Vol. ii, p. 425.
The Coliseum, a Fragment of a Romance.
The Prose Works of Percy Bysshe Shelley. Harry Buxton Forman. Vol. iii, p. 27.