| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| February 1957 |
|
Galaxy Science Fiction, February 1957 | Galaxy Publishing Corporation | MAGAZINE | 54 |
| April 1957 |
|
Galaxy Science Fiction, No. 49 | Strato Publications | MAGAZINE | 52 |
| February 2016 | Advance Agent | Project Gutenberg | Chapbook |