| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| January 1947 |
|
Weird Tales, January 1947 | Weird Tales | MAGAZINE | 60 |
| 1953 |
|
E Pluribus Unicorn | Abelard Press | Collection | 222 |
| 1953 |
|
E Pluribus Unicorn | Nelson, Foster & Scott | Collection | 222 |
| November 1956 |
|
E Pluribus Unicorn | Ballantine Books | Collection | 174 |
| March 1959 |
|
Satellite Science Fiction, March 1959 | Renown Publications, Inc. | MAGAZINE | 47 |
| 1960 |
|
E Pluribus Unicorn | Abelard-Schuman | Collection | 222 |
| March 1961 |
|
E Pluribus Unicorn | Panther | Collection | 159 |
| June 1963 |
|
E Pluribus Unicorn | Panther | Collection | 159 |
| June 1965 |
|
E Pluribus Unicorn | Ballantine Books | Collection | 174 |
| June 1965 |
|
E Pluribus Unicorn | Ballantine Books | Collection | 174 |
| 1968 |
|
E Pluribus Unicorn | Panther | Collection | 159 |
| 1969 |
|
E Pluribus Unicorn | Panther | Collection | 159 |
| January 1970 |
|
E Pluribus Unicorn | Ballantine Books | Collection | 174 |
| November 1976 |
|
Weird Tales | Neville Spearman | Anthology | 201 |
| August 1977 |
|
E Pluribus Unicorn | Pocket Books | Collection | 174 |
| August 1977 |
|
E Pluribus Unicorn | Pocket Books | Collection | 174 |
| 1978 |
|
Weird Tales Vol. 2 | Sphere | Anthology | 147 |
| November 1979 |
|
E Pluribus Unicorn | Pocket Books | Collection | 174 |
| February 1984 |
|
E Pluribus Unicorn | Timescape / Pocket Books | Collection | 174 |
| October 1990 |
|
Weird Tales | Xanadu | Anthology | 201 |
| November 1990 |
|
Weird Tales | Carroll & Graf | Anthology | 201 |
| February 1995 |
|
The Ultimate Egoist | North Atlantic Books | Collection | 10 |
| November 1998 |
|
The Ultimate Egoist | North Atlantic Books | Collection | 10 |
| November 2010 | The Ultimate Egoist | North Atlantic Books | Collection | ||
| 2012 |
|
Weird Tales | Pulp Classics on DVD | Anthology | 60|33060 |
| September 2013 |
|
The Ultimate Egoist | Gateway / Orion | Collection |