The Caves of Mars / Space Mercenaries
| First published | 1965 |
|---|---|
| Publisher | Ace Books |
| Format | dos |
| Type | Omnibus |
| Catalog ID | M-133 |
| Cover art | Gray Morrow & Alex Schomburg |
| Pages | 125+131 |
| Price | $0.45 |
- Cover for The Caves of Mars has "First Book Publication"
- Cover artist is uncredited and signature is not visible on the artwork. ACE Image Library credits Alex Schomburg.
- The Caves of Mars 125 pages
- Cover for Space Mercenaries has "Complete Novel"
- Artist's signature on the artwork "Gray Morrow"
- Space Mercenaries 131 pages
- Page 5 of both titles have interior art signed by Jack Gaughan.
- For individual, clear images, see here for Space Mercenaries and here for The Caves of Mars.
No ISBN on record — searching by title and author.
| Page | Title | Author(s) | Type |
|---|---|---|---|
| 5|2 | The Caves of Mars | Emil Petaja | Novel |
| 5|4 | Space Mercenaries | A. Bertram Chandler | Novel |