Seven Came Back

by Clifford D. Simak

Richard Webb was looking for an ancient city on Mars, and he met six Martian "ancients" who were searching in vain for the Seventh.

Unknown Binding

Published January 1, 1950

About the author

"He was honored by fans with three Hugo awards and by colleagues with one Nebula award and was named the third Grand Master by the Science Fiction and Fantasy Writers of America (SFWA) in 1977." (Wikipedia)

See http://en.wikipedia.org/wiki/Clifford...