NB: There are two stories fewer in this edition (13 stories) than in the Gregg Press edition (15 stories). Short story collection, comprising: Colony; Impostor; Expendable; Planet for Transients; Prominent Author; The Builder; The Impossible Planet; The Indefatigable Frog; The Turning Wheel; Progeny; Upon the Dull Earth; The Cookie Lady; Exhibit Piece.