Horrible Harry and the Dead Letters

The post office has given Room 3B a real mailbox and Harry and his friendscant wait to learn how mail is delivered. Everyone pitches in but afterseveral kids di... » 

The post office has given Room 3B a real mailbox and Harry and his friendscant wait to learn how mail is delivered. Everyone pitches in but afterseveral kids discover their bookmarks are missing Harry realizes a thief isusing the mailbox for something other than letters. Illustrations. «