The Hitchhiker’s Guide to the Galaxy
Douglas Adams
The Ultimate Hitchhiker's Guide to the Galaxy (1)
The Restaurant at the End of the Universe
The Ultimate Hitchhiker's Guide to the Galaxy (2)
So Long, And Thanks For All The Fish
The Ultimate Hitchhiker's Guide to the Galaxy (4)
Mostly Harmless
The Ultimate Hitchhiker's Guide to the Galaxy (5)
Dirk Gently's Holistic Detective Agency
The Long Dark Tea-Time Of The Soul
Life, the Universe and Everything
HHGTTG - The Lost Chapters
Last chance to see
Douglas Adams & Mark Carwardine
The Salmon of Doubt
Young Zaphod Plays It Safe
The Meaning of Liff
Douglas Adams & John Lloyd