|
Robert K. Klepper Silent Films, 1877-1996, A Critical Guide to 646 Movies Jefferson, North Carolina and London, 1999 |
|
Robert B. Connelly The Motion Picture Guide, Silent Film 1910-1936 Chicago, 1986 |
| Robin Blyn, Between Silence and Sound, Ventriloquism and the advent of the voice in The Unholy Three, in: Bernd Herzogenrath (ed), The Films of Tod Browning, London, 2006 |