| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| June 1955 |
|
Astounding Science Fiction, June 1955 | Street & Smith Publications, Inc. | MAGAZINE | 53 |
| November 1955 |
|
Astounding Science Fiction, November 1955 | Atlas Publishing and Distribution Co. Ltd | MAGAZINE | 45 |
| January 2008 | The Guardians | Project Gutenberg | Chapbook | 53 |