After the Battle of Gettysburg, a dead Union soldier was found near the center of town. He bore no identification, but in his hands he held a photograph of three children. In this week's episode of the Futility Closet podcast we'll follow the efforts of one Philadelphia physician to track down the lost man's family using only the image of his children.
We'll also sample a 9-year-old's comedy of manners and puzzle over a letter that copies itself.