8 books in series

The Complete Calvin and Hobbes

The Complete Calvin and Hobbes is a 8-book series with 8 released primary works first released in 1988 with contributions by Bill Watterson.

The Essential Calvin and Hobbes: A Calvin and Hobbes Treasury
The Authoritative Calvin and Hobbes: A Calvin and Hobbes Treasury
The Indispensable Calvin and Hobbes: A Calvin and Hobbes Treasury
Attack of the Deranged Mutant Killer Monster Snow Goons
The Days Are Just Packed
Homicidal Psycho Jungle Cat
There's Treasure Everywhere
It's a Magical World