Pull the yellowed card from the box and slide it into the viewer. Two binocular images, nearly identical, reveal a scene from the past in vivid, three-dimensional detail. Transcending space and time, the card shows the world as it existed in 1900, a moment when technology collapsed borders; when wars ignited between great powers; when natural forces brought disaster on surging, vulnerable cities--a moment very much like our own. In 1900 the...