| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1959 |
|
The Secret of the Ninth Planet | John C. Winston Co. | Novel | |
| April 1960 |
|
L'énigme de la neuvième planète | Les Editions Daniber | Novel | |
| April 1960 |
|
The Secret of the Ninth Planet | John C. Winston Co. | Novel | |
| November 1960 |
|
The Secret of the Ninth Planet | John C. Winston Co. | Novel | |
| September 1962 |
|
The Secret of the Ninth Planet | John C. Winston Co. | Novel | |
| July 1965 |
|
The Secret of the Ninth Planet | John C. Winston Co. | Novel | |
| January 1967 |
|
The Secret of the Ninth Planet | Holt, Rinehart and Winston | Novel | |
| September 2010 |
|
The Secret of the Ninth Planet | Project Gutenberg | Novel | |
| December 2013 |
|
The Secret of the Ninth Planet | Thunderchild Publishing | Novel | |
| September 2015 |
|
The Secret of the Ninth Planet | Thunderchild Publishing | Novel | |
| June 2018 |
|
Beyond the Walls of Space / The Secret of the Ninth Planet | Armchair Fiction | Omnibus | bc |