Like most comics of the era, Jetta of the 21st Century had text stories...
...to qualify for second-class (magazine) mailing rates!
The text stories featured other characters from the "Jetta-verse"!
Written by "Dixon Wells" (a pen-name used only for Jetta text stories), this never-reprinted piece from Standard's Jetta of the 21st Century #7 (1953) would've made a pretty good comic story.
Perhaps it was scripted by Dan DeCarlo?
Also included in this final issue of the series was this one-pager totally-unrelated to the "Jetta-verse"...
No credits are available for this short, which probably was meant for one of Standard's sci-fi comics, Lost Worlds or Fantastic Worlds!