| The Hitchhiker's Guide to the Galaxy | Douglas Adams | Science Fiction, Humour, Classics | 1979-10-12 | Yes | 5 | Hitchhiker's Guide to the Galaxy [1] |
| The Restaurant at the End of the Universe | Douglas Adams | Science Fiction, Humour | 1980-10-01 | Yes | 4 | Hitchhiker's Guide to the Galaxy [2] |
| Life, the Universe and Everything | Douglas Adams | Science Fiction, Humour | 1982-08-01 | Yes | 4 | Hitchhiker's Guide to the Galaxy [3] |
| So Long, and Thanks for All the Fish | Douglas Adams | Science Fiction, Humour | 1984-11-09 | Yes | 4 | Hitchhiker's Guide to the Galaxy [4] |
| Mostly Harmless | Douglas Adams | Humour, Science Fiction | 1992-01-01 | Yes | 4 | Hitchhiker's Guide to the Galaxy [5] |
