img||||Mount Rushmore|The story behind one of the world's largest pieces of sculpture.|Watch Preview||06.30.15 9:00/8:00 c;img||||Blackout|What happened when the lights went out? Premieres 7/14 on PBS. |Watch Preview||07.14.15 9:00/8:00 c;img||||Walt Disney |Premiering Sept. 14 & 15 on PBS|Watch Preview||09.14.15 9:00/8:00 c;img||||The Abolitionists|They tore the nation apart in order to make a more perfect union.|Watch Preview||07.07.15 9:00/8:00 c