The "unseen guardians" of the title are the Postal Inspection Service, which investigates mail order racketeering; the Underwriters' Laboratories, which are shown testing electrical equipment, fire extinguishers, and large floor safes; and those who run orphanages, who assure that the children in their care are placed in proper adoptive homes.

• DirectorBasil Wrangell
• Release26 August 1939
• Genre
  Documentary / Drama
• Duration0h 11m
• Budget?
• Revenue?
• Rate
  

  7.0
  1 reviews
• Productions

  Metro-Goldwyn-Mayer