A.E. van Vogt Vintage SCIENCE FICTION 5 paperback book lot 

these are first printings of these paperbacks:

EMPIRE OF THE ATOM  a Macfadden Book #60-267   1966   60c cover price    tanned pages

THE CHANGELING    a Macfadden Book #50-335   1967   50c cover price  clean, tight copy

SLAN   Ballantine Book 511 K  May 1961   35c cover price   tanning, discoloration on spine

THE UNIVERSE MAKER  Ace G-660  no print date  50c cover price    edge wear with color loss; crease

THE WINGED MAN (with E. Mayne Hull) Berkley Medallion X1403 May 1967 60c price  Edge wear, creases