The novel was originally published as Ace Double F-199 together with The Psionic Menace by Keith Woodcott (a pseudonym of John Brunner).

[1] It was later rewritten as Out of the Dead City and published by Signet Books in 1968.

[2] The stories of the Fall of the Towers trilogy were originally set in the same post-holocaust Earth as Delany's earlier The Jewels of Aptor; linking references, however, were removed in later revised editions.

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