Unseen Guardians (1939)

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.

• Year: 1939
• Genres: Documentary, Drama
• Countries: United States of America
• Languages:
• Runtime: 11 min