Camp Knock Knock

by Betsy Duffey

Published 1 January 1996
Willie is king of the knock-knock jokes at summer camp, but to retain his title he must win the great riddle contest against Crow, who is best at everything.

The Camp Knock Knock Mystery

by Betsy Duffey

Published 1 January 1997
If Willie would change into clean clothes while at summer camp, he may find the joke book which Crow has hidden from him.