Available in HTML, plain text (us-ascii & iso-8859-1), & Plucker formats from Ebook #25270.
Produced from Amazing Science Fiction Stories, May 1960. The HTML edition includes artwork from that issue, credited to Finlay, as well as a reproduction of the magazine cover (art uncredited here but known to be by Ed Valigursky); it also includes hidden marginal page numbers, generally corresponding to those in the magazine, running 46-136, which have been used here in determining pagination.
An extensive list of typographical corrections which were made appears at the end of the text (including notes of inconsistent hyphenations which were not changed).
The Project Gutenberg wrapper gives the author's name as Joseph Everidge Kelleam, but the text as Joseph E. Kelleam (& the magazine cover as Joseph Kelleam).
"Produced by Greg Weeks, Andrew Wainwright and the Online Distributed Proofreading Team at http://www.pgdp.net".
