Henry David Thoreau (2014). “Citizen Thoreau: Walden, Civil Disobedience, Life Without Principle, Slavery in Massachusetts, A Plea for Captain John Brown”, p.216, Graphic Arts Books
"Hugh Bonneville Talks ‘Downton Abbey’, The Final Season, Julian Fellowes, and More". Interview with Christina Radish, collider.com. September 28, 2015.