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3:03
To Walt Disney, Marceline, Missouri would always be home. Premieres Sep. 14 & 15 on PBS.

1:03
The 50-year old rail system in Panama proved incapable of getting the job done.

1:56
On Dec. 10, 1913, after a final push of excavation, the Atlantic & Pacific were connected.

2:22
Stevens realized that building a sea level canal would doom the project to failure.

2:07
The locks were the mechanical marvel of the Panama Canal.

2:02
New Chief Engineer John Stevens turned his focus to repairing the Panama Railroad.

8:04
Watch Chapter 1 of the Greely Expedition.

7:37
Watch Chapter 1 of Stonewall Uprising.

0:30
To be openly gay in the 1960s was a serious risk.

1:23
In 1960s New York, gay men who dressed in women's clothing courted danger.

1:16
Reflections on the Stonewall rebellion.

1:20
The Mattachine society was one of the earliest gay rights groups.