| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| July 1966 |
|
Checkpoint Lambda | Berkley Medallion | Novel | 5 |
| 1968 |
|
A Murray Leinster Omnibus | Sidgwick & Jackson | Omnibus | |
| May 1973 |
|
Science Fiction Special (7) | Sidgwick & Jackson | Omnibus | |
| August 2019 |
|
Checkpoint Lambda | Gateway / Orion | Novel |