The Hitchhiker's Guide to the Galaxy (novel) productions in the late 1970s. Davies himself appears as Prosser. This edition is out of print – Adams bought up many remainder copies and sold them, autographed, on his website. There have been three audiobook recordings of the novel. The first was an abridged edition (), recorded in the mid-1980s by Stephen Moore, best known for playing the voice of Marvin the Paranoid Android in the radio series, LP adaptations and in the TV series. In 1990, Adams himself recorded an unabridged edition for Dove Audiobooks (), later re-released by New Millennium Audio () in the United States and available
Douglas Adams at the BBC original transmissions, had been discussed in biographies of Adams (e.g. "Don't Panic" by Neil Gaiman and "Wish You Were Here" by Nick Webb). In addition, the complete script for "The Lost Hitchhiker Sketch" appears in the 25th anniversary edition of "". Disc one covers subjects A to G, disc two covers subjects H to P, and disc three covers subjects Q to Z. Note: The CD set was released in early September 2004, after the Tertiary Phase of "The Hitchhiker's Guide to the Galaxy" had been recorded, but before transmissions began. The earliest material on the set is from August