Notes: - No statement of printing on copyright page (as noted by Currey.) - On copyright page: "This novel appeared in Startling Stories, May, 1953, under the title 'The Conditioned Captain'" and "Copyright, 1953, by Fletcher Pratt". - No credit for jacket art, but it is the same as the paperback edition which is signed and credited to Powers by Jane Frank's "The Art of Richard Powers". - $2.00 price and Ballantine number "H-25" on front flap of dust jacket.