Large book publishers like Doubleday and Simon & Schuster entered the market, greatly increasing demand for fiction. Authors created new manuscripts from old stories, to sell to publishers. Algis Budrys in 1965 described fixups as a consequence of the lack of good supply during the "bad years for quality" of the mid-1950s, although citing The Martian Chronicles and Clifford D. Simak's City as exceptions.[6]