By JEANNE RICE | Norwalk librarian The Norwalk Public Library has a new biography, “Lisa’s Triumph: Victory Over Leukemia,” by Sandra J. Hookham and Patricia D. Sullivan, with Dr. Rolv K. Slungaard. The book depicts Ontario resident Lisa Sullivan’s struggle with childhood cancer. ♦ ♦ ♦ The Norwalk-Ontario-Wilton Elementary School Traveling Preschool Playgroup will be at…