Mann, A. D. 1. (1856). Letter of A. Dudley Mann, to the citizens of the slaveholding states: In relation to a weekly Atlantic ferry line of iron steamships of thirty thousand tons, between the Chesapeake Bay and Milford Haven. London:: John Miller, Henrietta Street, Covent Garden..

Mann, A. Dudley 1801-1889. Letter of A. Dudley Mann, to the Citizens of the Slaveholding States: In Relation to a Weekly Atlantic Ferry Line of Iron Steamships of Thirty Thousand Tons, between the Chesapeake Bay and Milford Haven. London:: John Miller, Henrietta Street, Covent Garden., 1856.

Mann, A. Dudley 1801-1889. Letter of A. Dudley Mann, to the Citizens of the Slaveholding States: In Relation to a Weekly Atlantic Ferry Line of Iron Steamships of Thirty Thousand Tons, between the Chesapeake Bay and Milford Haven. London:: John Miller, Henrietta Street, Covent Garden., 1856.