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16:25
How did this twisted fragment of metal spark a communications revolution?

17:31
What does this letter reveal about America's early efforts to honor its war dead?

16:44
What role did these drawings play in one of the largest migrations in American history?

17:24
What role did this map play in one of World War II's fiercest battles?

17:57
How did this cane inspire a fiery political movement that threatened Lincoln's presidency?

2:36
Rob Schwimmer plays Waltz for Clara on his theremin.

15:59
What does this odd-looking boot have to do with America's first steps in space?

16:47
Was this device invented to help Americans believe they could survive a nuclear attack?

18:10
Does this letter help to trace one freed man's dream to return to Africa?

17:39
Did President Fillmore pardon a Native American convicted of murder?

17:20
Did this 1940s recording help convict the woman alleged to be a Japanese spy?

17:30
Was this piece of metal ripped from one of the most famous missing planes in history?