Gerda Frieberg was a Holocaust survivor, educator and staunch human rights advocate. After surviving a Nazi concentration camp as a teen, Mrs. Frieberg went on to co-found what is known today as the Sarah and Chaim Neuberger Holocaust Education Centre.Elliot Sylman/Courtesy of the Family The last time Gerda Frieberg saw her father, he was standing on a rooftop. The year was 1942. He had relayed a message instructing his daughter to look through a window at the building across the street from the repurposed jail in which she was temporarily housed. “I could see him waving his arms,” she told...