| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1972 |
|
Science Fiction Hall of Fame: Volume Two | Sphere | Anthology | |
| January 1991 |
|
The Bruce Pennington Portfolio | Paper Tiger / Dragon's World | Nonfiction | [25] |
| June 1992 |
|
Ultraterranium | Paper Tiger / Dragon's World | Nonfiction | 13 |