"Sixteenth Census of the United States: 1940", Beverly Hills, Los Angeles County, California, April 1940; digital image of federal census page listing the family of "Howard W. Hawkes", identified as a director of motion pictures. FamilySearch, archives of The Church of Jesus Christ of Latter-day Saints, Salt Lake City, Utah. Retrieved August 25, 2018. In the cited census, Barbara "Hawkes" is documented to be 5-years-old at the time; David, 11-years-old; and Peter, 15-years old.
tcm.com
"Douglas Shearer", biographical profile, Turner Classic Movies (TCM), Turner Broadcasting System, a subsidiary of Time Warner, Inc. New York, N.Y. Retrieved August 24, 2018.