One morning early in the summer of 1826, I brushed the sweat from my forehead and the flour from my clothes, unrolled my shirt-sleeves to my wrists, donned my coat, and, with never a suspicion that that day was to be unlike any other, calmly walked out into the slanting sunshine. Rain had fallen in the night, and the air was still fresh and cool. Although the clock had but just struck six, I had been at work an hour, and now that my uncle, Seth Upham,...