The Hitchhiker's Guide to the Galaxy. Videocassette. Six-episode British Broadcasting Corp. (BBC) Television series. BBC Video/CBS Fox, 1981.

The Hitchhiker's Guide to the Galaxy. Audiocassette. Read by Stephen Moore. Ontario: Music for Pleasure Ltd., 1981.

The Restaurant at the End of the Universe. Audiocassette. Read by Stephen Moore. Ontario: Music for Pleasure Ltd., 1983.

Life, the Universe and Everything. Audiocassette. Read by Stephen Moore. Ontario: Music for Pleasure Ltd., 1984.

So Long, and Thanks for All the Fish. Audiocassette. Read by Douglas Adams. Beverly Hills, CA: Dove Audio Books, 1992.

Mostly Harmless. Audiocassette. Read by Douglas Adams. Beverly Hills, CA: Dove Audio Books, 1993.

The Hitchhiker's Guide to the Galaxy: The Complete Audio Books. Set of four compact discs. Beverly Hills, CA: Dove Audio Books, 1998.