| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| November 1960 |
|
Sanctuary in the Sky / The Secret Martians | Ace Books | Omnibus | 5 |
| May 1963 |
|
Asyl zwischen den Sternen | Pabel | Novel | |
| December 1964 |
|
Galassia, #48 | Casa Editrice La Tribuna | MAGAZINE | 7 |
| August 2013 |
|
Sanctuary in the Sky | Gateway / Orion | Novel |