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21:27
Conservation Specialist Linda Edquist demonstrates preservation techniques.
16:22
Interviews from Robert Douglass and Frank Smith, both involved in the Attica Prison Riot.
9:37
John D. Rockefeller was the world's first billionaire and the most hated man in America.
2:58
Cinematographer Boyd Estus talks filming for historical documentary.
0:44
Workers moved the Colorado River from the bed it had known for 12 million years.
1:31
The first effort to build a subway dates back to the 1850s with Alfred Ely Beach.
0:30
The worst epidemic in American history, killing over 600,000.
1:23
At least 7,700 men would be needed to build the Interborough Rapid Transit, or IRT.
1:07
In the late 19th-century, an engineer was regarded as a god-like figure.