38. Todd Arrington on James Garfield

37. David S. Reynolds on Abraham Lincoln

36. The Price of Ambition Part III (John F. Kennedy)

35. Fredrik Logevall on John F. Kennedy

34. The Price of Ambition Part II (John F. Kennedy)

33. Lindsay Chervinsky on Washington's Cabinet

32. Paul Brandus on Jackie Kennedy Onassis

31. The Price of Ambition Part I (John F. Kennedy)

30. The World According to Vladimir Putin

29. Abraham Lincoln: The Master of Fake News