| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| July 1959 |
|
Astounding Science Fiction, July 1959 | Street & Smith Publications, Inc. | MAGAZINE | 140|140.1 |
| December 1959 |
|
Astounding Science Fiction, December 1959 | Atlas Publishing and Distribution Co. Ltd | MAGAZINE | 120|120.1 |