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| Aflevering | Eerste uitzending |
|---|---|
| S21E01 - The Trials of J. Robert Oppenheimer | 26/01/2009 |
| S21E02 - The Polio Crusade | 02/02/2009 |
| S21E03 - The Assassination of Abraham Lincoln | 09/02/2009 |
| S21E04 - A Class Apart | 23/02/2009 |
| S21E05 - We Shall Remain (1): After the Mayflower | 13/04/2009 |
| S21E06 - We Shall Remain (2): Tecumseh's Vision | 20/04/2009 |
| S21E07 - We Shall Remain (3): Trail of Tears | 27/04/2009 |
| S21E08 - We Shall Remain (4): Geronimo | 04/05/2009 |
| S21E09 - We Shall Remain (5): Wounded Knee | 11/05/2009 |