The Hitchhiker's Guide to the Galaxy
Douglas Adams & Eoin Colfer
The Ultimate Hitchhiker's Guide to the Galaxy
Douglas Adams & Neil Gaiman
The Restaurant at the End of the Universe
Douglas Adams
Life, the Universe and Everything
So Long, and Thanks for All the Fish
The Long Dark Tea-Time of the Soul
Mostly Harmless
Dirk Gently's Holistic Detective Agency (Dirk Gently Series)
Life, the Universe, and Everything
HHGTTG - The Lost Chapters
The Hitchhikers Guide to Galaxy