Available in unpaginated HTML, plain text (us-ascii), & Plucker formats from Ebook #25086.
Produced from Amazing Science Fiction Stories, October 1958. The HTML version includes artwork from that issue, credited to Novick, as well as a small reproduction of the magazine cover, artwork uncredited here but known to be by Ed Valigursky. (This was the story illustrated on the cover).
The Project Gutenberg wrapper identifies the illustrator as Irving Novick, the transcribed text as Novick.
"Minor spelling and typographical errors have been corrected without note."
"Produced by Greg Weeks, Stephen Blundell and the Online Distributed Proofreading Team at http://www.pgdp.net".