3 Vintage Joke/Riddle books for kids. Copyrights are 1978, 1979 and 1986. Overall books are in good, used condition for the age of them. Pages and spines are intact. There is some creasing on the covers and one has a stamp on the inside cover. The Riddle Book The Joke Book The Funniest Knock-Knock Book Ever From a clean, smoke free home