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  • Title: Okay for Sound
  • Summary: A promotional film celebrating the twentieth anniversary of Warner Brothers' first exhibition of the Vitaphone sound-on-film process.
  • Cast: Truman Bradley (narration)
  • Year: 1946
  • Item Type:
  • Keywords:
  • Format: DVD
  • Language: English
  • Country: USA
  • Collection: Filmmaking | Supplements