2:10

On World War II and Nazi Symbolism: A Note from Extra History

10:18

The Polio Epidemic - FDR & The March of Dimes - Medical History - Extra History

11:12

Curing Tuberculosis - The Hero Koch - Part 1 - Extra History

53:01

Irish Potato Famine | Extra History Complete | Irish History

7:34

England: The Broad Street Pump - You Know Nothing, John Snow - Extra History - Part 1

4:47

History's "worst" nun - Theresa A. Yugar

49:57

The Deadliest Infectious Disease of All Time | Crash Course Lecture

11:30

History of Dentistry - Demons and Tooth Worms - Extra History - Part 1