| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| May 1956 |
|
Astounding Science Fiction, May 1956 | Street & Smith Publications, Inc. | MAGAZINE | 152|152.2 |
| October 1956 |
|
Astounding Science Fiction, October 1956 | Atlas Publishing and Distribution Co. Ltd | MAGAZINE | 122|122.1 |