Warden, W., & Joly, J. R. (1817). Letters written on board His Majesty's ship the Northumberland, and at St. Helena: In which the conduct and conversations of Napoleon Buonaparte, and his suite, during the voyage, and the first months of his residence in that island, are faithfully described and related (6th ed.). R. Ackermann.

Warden, William, and Jaspar Robert Joly. Letters Written on Board His Majesty's Ship the Northumberland, and at St. Helena: In Which the Conduct and Conversations of Napoleon Buonaparte, and His Suite, During the Voyage, and the First Months of His Residence in That Island, Are Faithfully Described and Related. 6th ed. R. Ackermann, 1817.