Series
Hitchhiker's Guide to the Galaxy
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.
3 books here · 1984–1995
Publication order
This is publication order — nobody has confirmed a different reading order for this one yet.
4
So Long, and Thanks for All the Fish
1984 · Douglas Adams
5
Mostly Harmless
· Douglas Adams
—
And Another Thing...
· Eoin Colfer