In search of Cross the Border—Close the Gap and Playboy magazine.

For our discussion, the term [postmodernism] only really becomes interesting with the debate on American literature, as introduced by Irving Howe, who in his essay Mass Society and Postmodern Fiction (Partisan Review XXVI, 1959, pp. 420-36) heralded in a complete reversal with his use of the term. He describes contemporary literature as being characterised by limpness, as having lost its potency. This was an accusation (although he also considered it a natural development) inasmuch as he stated that the new mass society with its egalitarian forms found its approximation in literature, i.e., no longer possessed innovative power. Worth mentioning are also Leslie Fiedler: Cross the Border—Close the Gap ( Playboy, December 1969) (so there was “transcending of borders” already then!). The term first became a central topic of debate in American literature of the 1950s. — via wsws.org

See also: postmodern literature