It was a top secret government project, its funds coming quietly from the Bureau of Standards, its orders directly from the President. The project's goal was to survey the future. The survey would be made in person, by the use of the newly-developed Time Displacement Vehicle. Three specially
One of his best novels, in which time travellers from an imperial USA several hundred years hence are sent to acquire a recording of a lost speech of Abraham Lincoln; the two cultures are effectively contrasted. The ending, in which the protagonist is trapped in an 1856 far less unattractive than
What if... - A Time Traveler from the past and future were tampering with today's history? - A man from Mars suddenly appeared in a midwest suburb, asking directions to the next planet? - A science fiction writer was betraying atomic secrets he didn't know he had? What if... There are the
