A Traveler in Time

A man opens his door to his older self, who explains how he will build a time machine that nobody ever invented. Lester del Rey's 1951 story is a perfect little time paradox.

Lester del Rey

A convict is sent two hundred years into the past to kill the founder of a movement, carrying the man's own skull to recognize him. A 1952 Philip K. Dick story whose ending loops back on itself.

Philip K. Dick

An old man in a wheelchair meets a young stranger from the future at a train station, and the stranger proposes a very unusual trade. A playful 1961 story about age, freedom and second chances.

Sylvia Jacobs