Originally published in Brave New World Revisited (1958).
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| April 1959 |
|
The Magazine of Fantasy and Science Fiction, April 1959 | Mercury Press, Inc. | MAGAZINE | 87 |
| 1965 |
|
Brave New World Revisited | Perennial Library / Harper & Row | Nonfiction | 68 |
| February 1977 |
|
Turning Points: Essays on the Art of Science Fiction | Harper & Row | Nonfiction | 231 |
| 2004 |
|
Brave New World Revisited | Vintage (UK) | Nonfiction | 87 |
| May 2014 |
|
Turning Points: Essays on the Art of Science Fiction | Gateway / Orion | Nonfiction |