George Bernard Shaw (2015). “George Bernard Shaw: Collected Articles, Lectures, Essays and Letters: Thoughts and Studies from the Renowned Dramaturge and Author of Mrs. Warren’s Profession, Pygmalion, Arms and The Man, Saint Joan, Caesar and Cleopatra, Androcles And The Lion”, p.317, e-artnow
John Adams, Daniel LEONARD, Jonathan SEWALL (1819). “Novanglus and Massachusettensis; or, political essays, published in ... 1774 and 1775, on the principal points of controversy, between Great Britain and her colonies; the former by John Adams ... the latter by Jonathan Sewall [or rather, Daniel Leonard] ... To which are added a number of letters lately written by President Adams to the Hon. William Tudor, etc”, p.11