[The Legion of Space, first published in 1935,] is a classic adventure story of three men who set out on a seemingly impossible quest through unknown space and across a horrible planet to rescue a girl who possesses the secret that can save mankind from a dread alien menace. Giles Habibula, one of the three, is a marvelous comic figure. Even today, the suspense works. If you've never read it, you've missed a fine story. (p. 171)

Lester del Rey, in a review of "The Starchild Trilogy" (copyright © 1978 by The Condé Nast Publications Inc.; reprinted by permission of the author), in Analog Science Fiction/Science Fact, Vol. XCVIII, No. 7, July, 1978, pp. 170-71.