Introduction (Insert Knob A in Hole B)
| First published | October 1971 |
|---|---|
| Type | Essay |
| Series | Asimov's Essays: Own Work |
This essay is untitled above the work. Any titled versions should be varianted.
Essay starts: "In some ways, this story has the strangest background of any I ever wrote." Essay finishes: "After all, I had twenty minutes."
"First appearance – The Magazine of Fantasy and Science Fiction, December 1957. ©, 1957, by Fantasy House, Inc."
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| October 1971 |
|
Nightfall Two | Panther / Granada | Collection | 127 |
| December 1984 |
|
Nightfall and Other Stories | Del Rey / Ballantine | Collection | |286 |
| July 1991 |
|
Nightfall and Other Stories | Grafton / HarperCollinsPublishers | Collection | 367 |