Review of "Knock, Knock" by

14 children's book artists present their version of the classic Knock-Knock joke. Oh yes, groaners galore, and perfect to share with the early readers in your house. Apologies to Garrison Keillor and his fans - no "Sam and Janet", which is probably for the best since kids would never get it. But the jokes that are here are silly enough to appeal to the little ones and you'll probably giggle more than once yourself as you read along.