Lincoln's assassination and the "human wormhole" (HT:AB)

http://www.theatlantic.com/technology/archive/2012/10/a-guy-who-saw-lincoln-get-shot-was-on-a-tv-show-in-1956-that-is-now-on-youtube/263800/

A Guy Who *Saw* Lincoln Get Shot Was on a TV Show in 1956 That Is Now on YouTube

The America of Lincoln and the Civil War can feel like distant history, but every now and then, through the appearance of what Jason Kottke has called a "human wormhole," we are confronted with the brevity of a century and a half.