Available in unpaginated HTML, plain text (us-ascii & iso-8859-1), & Plucker formats from Ebook #23942.
Produced from Astounding, June 1959. The HTML version includes artwork from that issue, credited to Freas & containing his KF-circle logo.
The Project Gutenberg wrapper identifies the author as Dallas McCord Reynolds & the artist as Kelly Freas; the transcribed text gives these as Mack Reynolds & Freas, respectively.
"Minor spelling and typographical errors have been corrected without note."
"Produced by Greg Weeks, Bruce Albrecht, Stephen Blundell and the Online Distributed Proofreading Team at http://www.pgdp.net".