All this week, Errol Morris has been trying to answer a question about a famous "unknown" soldier who was killed at Gettysburg. When his body was found, there wasn't any identifying information on him. However, he was clutching a photograph of three children, apparently his last focus before death. Over five parts (final part here, it has links to the others), Morris sets out to answer "whose father was he?" But, in typical Morris fashion, there's much more to the story of the man, the children, and the photograph than meets the eye. Well worth the read.