“Not The Last Butterfly,” a documentary about he Butterfly Project, a grassroots arts and education initiative that memorializes the 1.5 million children killed in the Holocaust, is shown at the River Edge Public Library, along with a film telling the story of an art teacher who helped the children of Terezin. Co-sponsored by River Dell Hadassah, Friends of the Library, and the River Edge Cultural Center. 685 Elm Ave. (201) 261-1663, ext. 4.