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Incoming Resources
- Knock knock jokes, by Ima Laffin
- Knock, knock, who's there?, by Anna Ross ; illustrated by Joe Mathieu
- Laugh-out-loud animal jokes for kids, Rob Elliot
- Knock! Knock! Where is there?, by Brian Elling ; illustrated by Andrew Thomson, David Groff, Kevin McVeigh, and Nancy Harrison
- Dinosaur jokes, compiled by Laura Alden ; illustrated by Russell Rigo ; created by The Child's World
- Knock-knock-jokes for kids, Rob Elliott
- Knock! Knock! Who was there?, by Brian Elling ; illustrated by Nancy Harrison and Andrew Tomson
- Kids' silliest knock-knocks, by Jacqueline Horsfall ; illustrated by Buck Jones