Pages 8 and 9 of this story appear to have been expanded from a single page. The original story is probably 10 pages or 10 1/2 pages.
The original story has speech on the last page that reads, "I'm going to show it to the editor of 'Unknown Worlds'! I bet he can use it!" This reprint changes the text to "I'm going to show it to an author that I know! I bet he can use it!"