Expedition to Earth

Expedition to Earth (ISBN 0-7221-2423-6) is a collection of science fiction short stories by Arthur C. Clarke. There are at least two variants of this book's table of contents-in different editions of the book (perhaps with different ISBNs). Both variants include the stories History Lesson & Encounter in the Dawn. But only one story is included under its own title; other story is included under the title "Expedition to Earth". Variants differ in the story that is included under its own title. This collection, originally published in 1953, includes:"Second Dawn" "If I Forget Thee, Oh Earth" "Breaking Strain" "History Lesson" "Superiority" "Exile of the Eons" "Hide-&-Seek" "Expedition to Earth" ("Encounter in the Dawn" Sidgwick & Jackson, UK, 1954) "Loophole" "Inheritance" "The Sentinel"