The Holocaust horrors are unspeakable. The images of the Auschwitz death camp are indelible. Dr. Klara Swimmer speaks nonetheless. "You cannot imagine the pain, the suffering, and the smell," says the 80-year-old retired physician. She was a teenage Hungarian Jew when she entered the camp of the damned. Bill Kugelman, a Polish-born Jew, was interned behind the wire fences of Auschwitz when the first Hungarians arrived. He recalls the naked body of a young girl thrown from the train onto a heap of corpses. "She was blue all over," says Kugelman, also 80. "She was all blue," he repeats. His...