Read the excerpt from "Clara Barton’s Childhood.”Hiding her fear, the five-year-old took her first unsanctioned lesson on one of the beautiful colts which were a feature of her father's farm.Together in the pasture, the pair approached a couple of those beautiful grazing creatures, broken only to the halter and bit. David bridled both horses and, holding the reins of both bridles in one hand, threw Clara on the back of one colt.She nearly bounced off the horse. Already aloft on his colt, David swiftly reached down, catching her foot, and pushing her back into place."Hold the reins in one hand and twist your other hand in the mane!” he called, and with that advice, her lesson was complete. Horse and rider as one, they galloped away through the field, in and out among the other colts, in wild glee.