It was the first science fiction story to deal with antimatter.
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| April 1937 |
|
Astounding Stories, April 1937 | Street & Smith Publications, Inc. | MAGAZINE | 86 |
| August 1975 |
|
Before the Golden Age, Book 3 | Fawcett Crest | Anthology | 297 |
| June 1978 |
|
Before the Golden Age, Book 3 | Fawcett Crest | Anthology | 297 |
| April 1984 |
|
Isaac Asimov Presents the Best Science Fiction Firsts | Beaufort Books | Anthology | 7 |
| 1996 |
|
Isaac Asimov Presents the Best Science Fiction Firsts | Barnes & Noble Books | Anthology | 7 |