William Makepeace Thackeray (1871). “Miscellanies: The Paris sketch book of Mr. M. A. Titmarsh. The memoirs of Mr. Charles J. Yellowplush. The Irish sketch book. Notes of a journey from Cornhill to Grand Cairo”, p.30
William Makepeace Thackeray (1869). “The Paris sketch book. Memoirs of Mr. Charles J. Yellowplush. The Irish sketch book. Notes of a journey from Cornhill to Grand Cairo”, p.505