Isa Hackett
Copyright Holder 1
| Title | Format | |
|---|---|---|
 | The Penultimate Truth | Mass-Market Paperback |
Copyright Renewed By 3
| Title | Format | |
|---|---|---|
 | The Game-Players of Titan | Trade Paperback |
 | The Simulacra | Trade Paperback |
 | Counter-Clock World | Trade Paperback |
| Title | Format | |
|---|---|---|
| The Penultimate Truth | Mass-Market Paperback |
| Title | Format | |
|---|---|---|
| The Game-Players of Titan | Trade Paperback |
| The Simulacra | Trade Paperback |
| Counter-Clock World | Trade Paperback |