 Irwin eagerly accepted the task since Swaps was his favorite racehorse of all time.In 2016, Barry Irwin published his memoirs titled "Derby Innovator; the Making of Animal Kingdom", in which he reviews the moments in his life which helped to form his unique perspective on horse racing, including management and breeding.He also shares some excellent insight and background on many of the famous racehorses who carried his colors to the winners' circle - from his first stakes win in the 1970s in California, all the way to the 2011 Kentucky Derby with Animal Kingdom.