S23 Episode 1
God in America (Parts 1–2)
55 mins · Mon, 11 Oct 2010
S23 Episode 2
God in America (Parts 3-4)
55 mins · Tue, 12 Oct 2010
S23 Episode 3
God in America (Parts 5-6)
55 mins · Wed, 13 Oct 2010
S23 Episode 4
Robert E. Lee
55 mins · Mon, 24 Jan 2011
S23 Episode 5
Dinosaur Wars
55 mins · Mon, 17 Jan 2011
S23 Episode 6
Panama Canal
55 mins · Mon, 24 Jan 2011
S23 Episode 7
The Greely Expedition
55 mins · Mon, 31 Jan 2011
S23 Episode 8
Triangle Fire
55 mins · Mon, 28 Feb 2011
S23 Episode 9
The Great Famine
55 mins · Mon, 11 Apr 2011
S23 Episode 10
Stonewall Uprising
55 mins · Mon, 25 Apr 2011
S23 Episode 11
Soundtrack for a Revolution
55 mins · Mon, 9 May 2011
S23 Episode 12
Freedom Riders
55 mins · Mon, 16 May 2011