Lord Philip Dormer Stanhope Chesterfield, Philip Dormer Stanhope Earl of Chesterfield (1855). “The Works of Lord Chesterfield: Including His Letters to His Son, Etc : to which is Prefixed, an Original Life of the Author”, p.136
"Tom Hanks Talks Captain Phillips, Meeting the Real Title Character, Filming on a Lifeboat, Shooting the Movie’s Final Scene and Working with the U.S. Navy". Interview with Christina Radish, collider.com. October 8, 2013.