Renowned jockey and Kentucky Derby winner, Pat Day, grew up on Lake Creek near Edwards, Colorado. His father, Mickey Day, taught him the fundamentals of riding and horsemanship at a young age. In this excerpt, Pat Day discusses a "very pivotal moment" during the first horse ride of his life. His mount was a spunky Welsh pony named Blackie. This History Nugget is excerpted from Pat Day's Vail Valley Voices oral history. Day was interviewed in...