Introduction dated September 1973.
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| August 1974 |
|
Space Opera | Futura | Anthology | 7 |
| November 1974 |
|
Space Opera | Weidenfeld & Nicolson | Anthology | ix |
| 1975 |
|
Space Opera | Book Club Associates | Anthology | 7 |
| 1975 |
|
Space Opera | Futura | Anthology | 7 |
| March 1975 |
|
Space Opera | Doubleday | Anthology | |
| May 1975 |
|
Space Opera: An Anthology of Way-Back-When Futures | Doubleday / SFBC | Anthology | ix |
| March 1977 |
|
Space Opera | Berkley Medallion | Anthology | ix |
| November 1977 |
|
Space opera: l'avventura spaziale 1927-1977 | Fanucci Editore | Omnibus | 11 |