John Keith Laumer (June 9, 1925(1925-06-09) – January 23, 1993) was an American science fiction author. Prior to becoming a full-time writer, he was an officer in the United States Air Force and a U.S. diplomat. His brother March Laumer was also a writer, known for his adult reinterpretations of the Land of Oz (also mentioned in Keith's The Other Side of Time).
Gambler's World
Greylorn
It Could Be Anything
The Yillian Way