| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| October 1959 |
|
Galaxy Magazine, October 1959 | Galaxy Publishing Corporation | MAGAZINE | 118 |
| November 1959 |
|
Galaxy, No. 76 | Strato Publications | MAGAZINE | 116 |
| July 1961 |
|
Galaxy, #38 | Casa Editrice La Tribuna | MAGAZINE | 43 |
| October 1962 |
|
No Future in It | Gollancz | Collection | 91 |
| May 1963 |
|
Anfrage an Pluto | Goldmann | Collection | 94 |
| May 1963 |
|
Anfrage an Pluto | Goldmann | Collection | 94 |
| January 1964 |
|
No Future in It | Doubleday | Collection | 83 |
| January 1964 |
|
No Future in It | The Science Fiction Book Club (UK) | Collection | |
| January 1964 |
|
No Future in It | Doubleday | Collection | 83 |
| October 1964 |
|
Stimulus | Denoël | Collection | 113 |
| April 1965 |
|
No Future in It | Panther | Collection | 92 |
| March 1966 |
|
Anfrage an Pluto | Goldmann | Collection | 94 |
| 1969 |
|
No Future in It | Curtis Books | Collection | 89 |
| September 1972 |
|
Le finestre del cielo | Casa Editrice La Tribuna | Collection | 113 |