| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| September 1959 |
|
Amazing Science Fiction Stories, September 1959 | Ziff-Davis Publishing Company | MAGAZINE | 7 |
| December 1965 |
|
Great Science Fiction, No. 1 | Ultimate Publishing Co., Inc. | MAGAZINE | 57 |
| February 1967 |
|
Urania #455 | Mondadori | MAGAZINE | 30 |
| August 1976 |
|
A Galaxy of Strangers | Doubleday | Collection | 67 |
| May 1979 |
|
Der Tag ist nicht mehr fern | Goldmann | Collection | 70 |
| February 1988 |
|
Encounters | Headline | Anthology | 49 |
| June 2001 |
|
A Galaxy of Strangers | Wildside Press | Collection | 67 |