SF. Philip K. Dick - Counter-Clock World, paperback as description

Time runs backward in the Counter-Clock World.  Old men emerge from their graves, grow to middle age, youth, adolescence and childhood to be finally unborn in their mothers wombs.  The most powerful, and most feared, organisation in the world is the Library in charge of expunging the written records of events which no longer happened.  When a powerful Negro leader is reborn, the Library's one concern is to eliminate him before the renewal of racial violence tears the country apart.

The Sphere 1968 paperback is in fair to good condition based on the Hancer Standard.