First published in the magazine Scientific American, April 1962. Later published in the magazines Fortune, 1965 and Zenith, September 1964.
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 2002 |
|
Day Dark, Night Bright | Darkside Press | Collection | 73 |
| September 2012 |
|
Day Dark, Night Bright | e-reads.com | Collection | |
| April 2014 |
|
Day Dark, Night Bright | Open Road Integrated Media | Collection | |73 |
| July 2014 |
|
Day Dark, Night Bright | Open Road Integrated Media | Collection |