"The comic strip was widely popular worldwide and produced 18 books. Almost no legitimate Calvin and Hobbes merchandise exists outside of the book collections. Exceptions produced during the strip’s original run include two 16-month calendars (1988–1989 and 1989–1990), and the textbook Teaching with Calvin and Hobbes."
* * *
"'Beyond the Peanuts comic strips of legendary cartoonist Charles Schulz, there is no more popular comic strip...'"