THE CRUCIBLE OF TIME. New York: Ballantine Books, . Octavo, printed red wrappers. Advance copy (uncorrected proof) of the first edition. "Fix-up novel ... The history of an alien race's rise to technological mastery, episodically told. It's cleverly conceived -- a humane and ambitious work." - Pringle, The Ultimate Guide to Science Fiction, second edition (1995), p. 82. "An intriguing exercise in alternate history based in alternate ecology, impressive in scope." - Anatomy of Wonder (1987) 4-87. A fine copy. (#11541).