Market dominance was not only how many books Ace published, but also the first novels of authors such as Philip K. Dick ("Solar Lottery", 1955, D-103, bound with Leigh Brackett's "The Big Jump"); Gordon R. Dickson ("Alien from Arcturus", 1956, D-139, bound with Nick Boddie Williams' "The Atom Curtain"), Samuel R. Delany ("The Jewels of Aptor", 1962, F-173, bound with James White's "Second Ending"), Ursula K. Le Guin ("Rocannon's World", 1966, G-574, bound with Avram Davidson's "The Kar-Chee Reign"), Roger Zelazny ("This Immortal", 1966, F-393),