Speech at the Cow Palace, San Francisco, California, on November 02, 1960. "John F. Kennedy Quotations: Profiles in Courage Quotations", www.jfklibrary.org.
John Milton (1748). “The Poetical Works of Mr. John Milton: Containing Paradise Lost, ... Paradise Regain'd, ... Samson Agonistes, ... And His Poems on Several Occasions. With a Tractate of Education. In Two Volumes”, p.58