| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| February 1959 |
|
Astounding Science Fiction, February 1959 | Street & Smith Publications, Inc. | MAGAZINE | 100 |
| May 1959 |
|
Astounding Science Fiction, May 1959 | Atlas Publishing and Distribution Co. Ltd | MAGAZINE | 86 |
| October 2007 | Missing Link | Project Gutenberg | Chapbook | 100 |