Slide, Anthony (1998). The New Historical Dictionary of the American Film Industry. Abingdon and New York: Routledge. p. 61. ISBN978-1-579-58056-8. Schauer, Bradley (2017). Escape Velocity: American Science Fiction Film, 1950–1982. Middletown, CT: Wesleyan University Press. p. 32. ISBN9780819576583. "Thomas' PRC Tie to End Shortly". Motion Picture Daily. August 5, 1947. pp. 1, 8. Retrieved January 3, 2023. Note that the date of "1946" on page 1 is a clear misprint. Ward, Richard Lewis (2016). When the Cock Crows: A History of the Pathé Exchange. Carbondale: Southern Illinois University Press. p. 164. ISBN9780809334964.
