| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| October 1974 |
|
Iron Cage | The Viking Press | Novel | |
| October 1974 |
|
Iron Cage | The Viking Press / SFBC | Novel | 1 |
| August 1975 |
|
Iron Cage | Kestrel Books | Novel | 9 |
| 1976 |
|
Iron Cage | Ace Books | Novel | 9 |
| August 1980 | Iron Cage | Ace Books | Novel | 9 | |
| July 1981 |
|
Iron Cage | Ace Books | Novel | 9 |
| September 1982 |
|
Iron Cage | Ace Books | Novel | |
| October 1986 | Iron Cage | Ace Books | Novel | ||
| August 1987 |
|
Iron Cage | Puffin | Novel | |
| December 1992 |
|
Iron Cage | Roc / New American Library | Novel | |
| January 2013 |
|
The Iron Breed | Baen Books | Omnibus | |
| December 2013 |
|
The Iron Breed | Baen Books | Omnibus | |
| January 2014 |
|
The Iron Breed | Baen Books | Omnibus | 1 |