Howard Willard Cook, Our Poets of Today [dedicated to Julia Ellsworth Ford, Witter Bynner, Kahlil Gibran, Percy Mackaye], New York: Moffat, Yard & Company, 1919.
Witter Bynner (Emmanuel Morgan), Pins for Wings, Caricatures by Ivan Opffer and William Saphier, New York: The Sunrise Turn, Inc., 1920, p. 15.
Witter Bynner papers__________Harold Witter Bynner, also known by the pen name Emanuel Morgan, (August 10, 1881 – June 1, 1968) was an American poet, writer and scholar. While a student he took on the nickname "Hal" by which his friends would know him for the rest of his life. Bynner was friendly with Kahlil Gibran and introduced the writer to his publisher, Alfred A. Knopf. Harvard University - Houghton Library / Bynner, Witter, 1881-1968. Witter Bynner papers, 1829-1965. MS Am 1891.6 (70-74). Houghton Library, Harvard University, Cambridge, Mass.
Witter Bynner, Cycle [dedicated to Kahlil Gibran], A Book of Plays, New York: Knopf, 1922, p. 145.