Expedition to earth;: Eleven science-fiction stories

Blurb

Expedition to Earth 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. Both variants include the stories "History Lesson" and "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.