preceded by mutual's "2000 plus" (1950–52), "dimension x" was not the first adult science fiction series on radio, but the acquisition of previously published stories immediately gave it a strong standing with the science fiction community, as did the choice of well established, respected writers in the field: isaac asimov, robert bloch, ray bradbury, fredric brown, robert a. heinlein, murray leinster, h. beam piper, frank m. robinson, clifford d. simak, william tenn, jack vance, kurt vonnegut, jack williamson and donald a. wollheim. ernest kinoy and george lefferts adapted most of the stories and also provided original scripts.