Which famous literary brand mascot was created in 1957 as part of a campaign to encourage children's literacy, featuring the slogan 'A book is a present you can open again and again'?

The publishing world has created some of the most recognizable brand mascots in retail history, becoming cultural touchstones that transcend their marketing origins. These literary mascots have helped define publishing houses, bookstore chains, and literacy campaigns while becoming beloved characters in their own right. Test your knowledge of the iconic figures that have helped promote reading and literature across generations.

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The Penguin (Penguin Books)
The Cat in the Hat (Random House)
Curious George (Houghton Mifflin)
Clifford the Big Red Dog (Scholastic)