18.3x12.2 cm (7¼x4¾"), black cloth boards, emblem and lettering in green gilt, pictorial dust jacket. First American Edition.
Signed on title page by Adams. American edition of the "conclusion" of the Hitchhiker's Guide "trilogy" after which at least two more books by Adams would continue the story. Noted for being the only book in the series censored in the U.S. version.