Clarke.Contents:Second DawnIf I Forget Thee, Oh Earth Breaking Strain History Lesson (as "Expedition to Earth" in the British Edition, Sidgwick & Jackson, 1954)SuperiorityExile of the Eons Hide-and-SeekExpedition to Earth (as "Encounter in the Dawn" in the British Edition, Sidgwick & Jackson, 1954)LoopholeInheritance The Sentinel (basis for 2001)