The characters, places, and events of Hardy Boys Casefile #42, The Last Laugh (http://www.hardyboyscasefiles.com/series/casefiles.php?book_no=42), have been entered into the Hardy Boys Encyclopedia (http://www.hardyboyscasefiles.com/encyclopedia.php).
(https://www.hardyboyscasefiles.com/images/casefiles/CF042.jpg) (http://www.hardyboyscasefiles.com/series/casefiles.php?book_no=42)