The Green Book Magazine. Band 9, S. 519 und 521 (books.google.com).
Walter Brown, E. De Roy Koch: Olcott, Chauncy (John Chancellor). In: Who’s who on the Stage, 1908. The Dramatic Reference Book and Biographical Dictionary of the Theatre – Containing Careers of Actors, Actresses, Managers and Playwrights of the American Stage. B. W. Dodge & Co, New York 1908, S.333 (books.google.com).
