| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| June 1955 |
|
Fantastic Universe, June 1955 | King-Size Publications, Inc. | MAGAZINE | 19 |
| 1957 |
|
Robots and Changelings | Ballantine Books | Collection | 63 |
| December 1958 |
|
New Worlds Science Fiction, December 1958 | Nova Publications Ltd. | MAGAZINE | 98 |
| April 1961 |
|
Out of This World 2 | Blackie | Anthology | 168 |
| December 1966 |
|
Robot e folletti | Casa Editrice La Tribuna | Collection | 95 |
| 1970 |
|
Grands classiques de la science-fiction 2ème série | OPTA | Anthology | 120 |
| September 1972 |
|
Out of This World Choice | Blackie | Omnibus | 168 |
| May 1987 |
|
Fantastic Stories: Tales of the Weird & Wondrous | TSR | Anthology | 135 |
| August 2009 |
|
War & Space | NESFA Press | Collection | 461 |
| January 2015 |
|
The 13th Golden Age of Science Fiction Megapack: Lester del Rey, Vol. 2 | Wildside Press | Collection |