Introduction (Opus 100)
| First published | June 1969 |
|---|---|
| Type | Essay |
| Series | Asimov's Essays: Own Work |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| June 1969 |
|
Opus 100 | Houghton Mifflin | Collection | xi|0.1 |
| October 1970 |
|
Opus 100 | Dell | Collection | 13 |
| October 1970 |
|
Opus 100 | Dell | Collection | 13 |
| 1980 |
|
Opus: A Selection from the First 200 Books | Andre Deutsch | Omnibus | |13 |
| December 1980 |
|
Opus 100 | Dell | Collection |