| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| February 1955 |
|
Astounding Science Fiction, February 1955 | Street & Smith Publications, Inc. | MAGAZINE | 153|153.1 |
| July 1955 |
|
Astounding Science Fiction, July 1955 | Atlas Publishing and Distribution Co. Ltd | MAGAZINE | 124|124.1 |