^White Munden, Kenneth (1997). The American Film Institute Catalog of Motion Pictures Produced in the United States: Feature Films, 1921-1930. University of California Press. p. 80. ISBN0-520-20969-9.
^Monush, Barry (2003). The Encyclopedia of Hollywood Film Actors: From the Silent Era to 1965, Volume 1. Vol. 1. Hal Leonard Corporation. p. 587. ISBN1-557-83551-9.