Probably written in March 1940, according to Paul Williams' story notes in The Ultimate Egoist.
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1948 |
|
Without Sorcery | Prime Press | Collection | 13 |
| April 1954 |
|
Human? | Lion Books | Anthology | 111 |
| November 1979 |
|
The Golden Helix | Nelson Doubleday / SFBC | Collection | 150 |
| June 1980 |
|
The Golden Helix | Dell | Collection | 207 |
| January 1985 |
|
The Golden Helix | Bluejay Books | Collection | 207 |
| January 1989 |
|
The Golden Helix | Carroll & Graf | Collection | 207 |
| February 1995 |
|
The Ultimate Egoist | North Atlantic Books | Collection | 285 |
| November 1998 |
|
The Ultimate Egoist | North Atlantic Books | Collection | 285 |
| November 2010 | The Ultimate Egoist | North Atlantic Books | Collection | ||
| September 2013 |
|
The Ultimate Egoist | Gateway / Orion | Collection |