Gorgono and Slith originally appeared in the Spring 1940 issue of futuria fantasia.
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1940 |
|
Futuria Fantasia, Spring 1940 | Ray Bradbury | FANZINE | 3 |
| December 2012 | Futuria Fantasia, Spring 1940 | Project Gutenberg | Anthology | 3 | |
| May 2013 |
|
Fantastic Stories Presents: Science Fiction Super Pack #1 | Positronic Publishing | Anthology | 257 |
| May 2013 |
|
Futuria Fantasia, Spring 1940 | LibriVox | Anthology | |1 |
| August 2014 |
|
Fantastic Stories Presents: Science Fiction Super Pack #1 | Positronic Publishing | Anthology | 257 |
| 2015 |
|
Futuria Fantasia | The Monk Publisher | Anthology | |5.03 |
| April 2018 |
|
Fantastic Stories Presents: Science Fiction Super Pack #1 | Positronic Publishing | Anthology | 257 |