This is a lot of six paperbacks ... items are: SCAVENGER HUNT, Stephen Golden (Laser - 1976), CRASH LANDING ON IDUNA, ARTHUR TOFTE (Laser - 1975), KINGS OF INFINITE SPACE, Nigel Balchin (Curtis - 1968), PEOPLE MACHINES, Jack Williamson (Ace - 1971), THE LEGION OF TIME, Jack Williamson (Pyramid - 1967) & DOORWAY INTO TIME(collection including Asimov, Clarke and Leinster) (Manor - 1973 ... all books at least good