As an adventure story The Crossroads of Time must rank with the best of André Norton's work, with its tremendous variety of landscape and atmosphere and its fast, forceful plot. She has given herself an almost limitless power of narrative as she describes Blake's sojourn on one alternative world after another, and has taken every opportunity to bring colour, action and thought to a multiplicity of scenes. Above all she has knit the practical and the philosophical brilliantly in describing how a courageous but untaught young agent adjusts himself to known and unknown worlds and peoples. (p. 2823)

Margery Fisher, in her Growing Point, March, 1976.