* | October 7, 1889 Chicago, Illinois, USA | |
as Robert Zigler Leonard | ||
† | August 27, 1968 Beverly Hills, Los Angeles, California, USA |
Charles Donald Fox and Milton L. Silver (eds.) Who's Who on the Screen New York City, 1920 |
David Thomson The New Biographical Dictionary of Film New York, 2003 |
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Martin J. Quigley (ed.) The Motion Picture Almanac, Big Stars in Big Pictures Chicago, Ill., 1929 |