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Videos of playlist "PLob1mZcVWOajoHQawj9zxo2OrlScPhxJf"


4:20 / America's Book of Secrets: FBI's Letter to Martin Luther King Jr. (Season 4)

3:38 / America's Book Of Secrets: Scientists Discover the Cause of the Spanish Flu (S4) | History

5:58 / America's Book Of Secrets: DARPA's Secret Mind Control Technology (Season 4) | History

4:49 / America's Book Of Secrets: Supervolcano Lurks Beneath Yellowstone (Season 4) | History

4:24 / America's Book Of Secrets: Secret Aerospace Technology at Area 51 (Season 4) | History

5:21 / America's Book Of Secrets: Allied Forces Hunt for Stolen WWII Relics (Season 4) | History

8:21 / America's Book Of Secrets: The Rise and Fall of Freemasons in the U.S. (Season 4) | History

4:20 / FBI's Poison Pen Letter to MLK Exposed: America's Book Of Secrets (Season 4) | History

4:02 / America's Book Of Secrets: Unauthorized Drone Poses New Threats (Season 4) | History

5:01 / Top Secret Space Operation Revealed: America's Book Of Secrets (Season 4) | History