 In 2009, Leaf published his first full-length nonfiction book, "The Politically Incorrect Guide to the Sixties", in which he attacks popular perceptions of the 1960s as a radical decade dominated by hippies, rock music and free love.Leaf's 2017 play, "The Fight," turned a spotlight on the internecine battles among Second Wave feminists, focusing on the rivalry between Betty Friedan and Gloria Steinem.Leaf’s recent dramatic play “Pushkin,” which premiered at New York's Sheen Center in the summer of 2018 to great critical acclaim, has been hailed as a modern classic.