 In 1958 Keen founded the company, Cliff Keen Wrestling Products now known as Cliff Keen Athletic, Inc., which is still in the business of manufacturing wrestling gear, equipment and uniforms.Keen was also one of the authors of "Championship Wrestling", printed in 1943 while he was serving in the U.S. Navy, 1942-1945; it was a leading book on wrestling technique for several decades.Keen's influence and effect on the sport of amateur wrestling in the United States from the 1930s until present has been incredible and enduring.