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1:29
An anti-abolitionist mob threatens a meeting and burns Pennsylvania Hall to the ground.
2:37
In September of 1838, Frederick Douglass and William Lloyd Garrison met in Nantucket.
10:29
Historian Margaret Washington discusses topics of the antebellum period.
16:19
"Prospects of Mankind with Eleanor Roosevelt" first aired on WGBH in October, 1959.
2:47
The most dangerous phase of Hoover Dam's construction was building the diversion tunnels.
1:38
New York’s topography presented a special engineering challenge for subway planners.
1:07
In the late 19th-century, an engineer was regarded as a god-like figure.
2:06
Running New York's subway would require the most powerful electrical plant in the world.
1:06
Ed Stewart, Sergeant in the 84th Infantry, describes the sound of artillery fire.