A strong ice-flecked wind drove itself against the small group of men standing together in front of the trading post in Hammer Head City. The great dog King stood close to his master, with his long, bushy tail curled high above his lean, powerful body, his head turning briskly as he watched with bright eyes, the sled skimming lightly over the snow crested street. There was vigor and stamina in this dog, whose name was as well known throughout the north country as that of the man who owned him. But the trappers standing around, weren't talking about King today. Their attention was focused on the lead dog a few yards away, who was harnessed in line with some of the finest animals to ever pull a sled in the Yukon...