Tenn wrote two novels, both published in 1968. Of Men and Monsters is an expansion of his story "The Men in the Walls", originally in Galaxy Science Fiction (October 1963).[6] A Lamp for Medusa was published as a double novel with Dave Van Arnam's The Players of Hell. This novella was an expansion of his story "Medusa Was a Lady!" from the October, 1951 issue of Fantastic Adventures.