A shorter version of this novel, under the title "Spaceman" appeared serially in IF Magazine, May-July, 1967.
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| September 1967 |
|
Galactic Odyssey | Berkley Medallion | Novel | 5 |
| October 1968 |
|
Galactic Odyssey | Dennis Dobson | Novel | |
| May 1970 |
|
Galactic Odyssey | Mayflower | Novel | 7 |
| August 1983 |
|
Galactic Odyssey | Tor | Novel | 7 |
| January 1987 |
|
Galactic Odyssey | Tor | Novel | 7 |
| March 2002 |
|
Odyssey | Baen Books | Omnibus | 5 |
| September 2002 |
|
Odyssey | Baen Books | Omnibus | |
| May 2007 |
|
The 1634: The Baltic War Disk | Baen Books | Omnibus | |32.2 |
| May 2007 | Odyssey | Baen Books | Omnibus | ||
| May 2007 | The 1634: The Baltic War Disk | Baen Books | Omnibus | |32.2 | |
| May 2007 | Odyssey | Baen Books | Omnibus | ||
| October 2010 | The 1635: The Eastern Front Disk | Baen Books | Omnibus | |37.2 | |
| October 2010 | Odyssey | Baen Books | Omnibus | ||
| February 2016 |
|
Galactic Odyssey | Gateway / Orion | Novel |