Bessie, Alvah (1965). Inquisition in Eden. New York: The Macmillan Company. pp. 66–67. LCCN65-15558. Lawson's fellow screenwriter Alvah Bessie (another future member of the Hollywood Ten) contributed uncredited dialogue to the scenes when the Seawitch crew spot friendly Soviet planes in the sky and arrive at Murmansk.
Lawson, John Howard (1964). Film: The Creative Process. New York: Hill and Wang. p. 141. LCCN64020101.