CLASH OF STAR-KINGS & DANGER FRM VEGA                       by Avram Davidson & John Rackham                                         Ace Double,  First Printings, 1966 - Condition: Near VG          THE PHOENIX AND  THE MIRROR by Avram Davidson            Ace Science Fiction Special, 1st Pr., 1969 - Condition: VG                                                                                                                First Publilcation of three novels, two by Avram Davidson and one, as half of an Ace Double, by John Rackham.  PHOENIX has some spine end wear and light edge/corner wear.   Cover backs have some darkening.  CLASH/VEGA has a 3/4" spine  slit and light creasing/corner/edge wear, plus a store stamp inside and cover-back darkening.  Both have square spines, tight bindings and no writing.