From the first page of the Ace first edition: "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 use of the newly-developed Time Displacement Vehicle. Three specially trained men would be sent to the year 2000, and they would return with invaluable data about the problems to be faced by the government in decades to come.
It seemed almost routine at first. But when the survey team reached their target they found a savage land... an awesome world they may have made, and they had to wonder if any would return to tell about it."
In addition to its stand-alone volume, this title was published in the follow book. It can be rated independently of any volume containing it.