Sunny Jim: The Life Of America's Most Beloved Horseman, James Fitzsimmons is a biography written by Jimmy Breslin. The book tells the story of James Fitzsimmons, who is considered to be one of the greatest horse trainers in American history. Fitzsimmons was born in 1874 in Ireland and immigrated to the United States as a young boy. He began working with horses at a young age and quickly developed a talent for training them. Fitzsimmons went on to...