Cover
The cover was the outside portion of a book.

In 1953, Benny Russell was offered the potential for his story to be featured on the cover of Incredible Tales of Scientific Wonder if he wrote a novella based on a picture Douglas Pabst handed him. ()

In 2151, Jonathan Archer recalled looking at the cover of The Cosmos A to Z for hours as a child. ()

In an alternate timeline, Jake Sisko asked Korena if she'd like to design the cover for his new book. ()

See also
 Dust jacket
 Cover