Topic 1: Prehistoric times. A sound of thunder / Ray Bradbury -- Topic 2: The ancient Greeks. The Gorgon's Head / Gertrude Bacon -- Topic 3: The age of Charlemagne. Thus we frustrate Charlemagne / R.A. Lafferty -- Topic 4: The Renaissance. The Smile / Ray Bradbury -- Topic 5: Relations between East and West. The man on top / Reginald Bretnor -- Topic 6. Expanding horizons of science. It's such a beautiful day / Isaac Asimov -- Topic 7. Rise of modern dictators. I kill myself / Julian Kawalec [translated from the Polish by Harry Stevens] -- Topic 8: Atomic bombs and radiations. That only a mother / Judith Merril -- Topic 9A: Women's liberation. Survival Ship / Judith Merril -- Topic 9B: Generation gap. Absalom / Henry Kuttner -- Topic 9C: Dehumanization. "Repent, Harlequin!" said the Ticktockman / Harlan Ellison.