Libro 1
Galaxy of the Lost
E.C. Tubb
Libro 2
Slave Ship from Sergan
E.C. Tubb
Libro 3
Monster of Metelaze
E.C. Tubb
Libro 4
Enemy Within the Skull
E.C. Tubb
Libro 5
Jewel of Jarhen
E.C. Tubb
Libro 6
Seetee Alert!
E.C. Tubb
Libro 7
The Gholan Gate
E.C. Tubb
Libro 8
The Eater of Worlds
E.C. Tubb
Libro 9
Earth Enslaved
E.C. Tubb
Libro 10
Planet of Dread
E.C. Tubb