In 1925, a deadly diphtheria epidemic swept through icebound Nome, Alaska. The life-saving serum was a thousand miles away, and a blizzard was brewing. Airplanes could not fly in such conditions: only the dogs could do it. Racing against death, twenty dog teams relayed the serum across the Alaskan wilderness as newspapers nationwide headlined the drama, enthralling an entire generation. The heroic dash to Nome inspired the annual Iditarod Dog Sled...