Series
Ross Murdock Time War
We don't know whether this one is finished.
Nobody has confirmed the status of this series yet. That's a gap in our data, not a verdict on the books.
4 books here · 1959
Publication order
This is publication order — nobody has confirmed a different reading order for this one yet.
2
Galactic Derelict
1959 · Andre Norton
3
The Defiant Agents
· Andre Norton
5
Firehand
· Andre Norton
6
Echoes in Time
· Andre Norton