(Paperback)

When his friend Doug is infested with head lice and Mary convinces everyone to stay away, Harry and his other friend Song Lee stand by Doug and declare war on the bugs in this 35th installment.

(Paperback)

The post office has given Room 3B a real mailbox, and Harry and his friends can't wait to learn how mail is delivered. Everyone pitches in, but after several kids discover their bookmarks are missing, Harry realizes a thief is using the mailbox for something other than letters.

(Paperback)

When the origami pig that Song Lee made for her grandmother as a birthday present is seized by a substitute teacher, the usually well-behaved third-grader breaks a classroom rule to rescue it from the "June Box."

(Paperback)

The new art teacher asks the students of Room 3B to draw posters of things they love, and one of them will get to display his or her artwork on South School's brand-new TV show. Harry doesn't care about the contest. Mary, on the other hand, is convinced that her poster is the best, but if her poster isn't selected, she's going to make horrible trouble for Room 3B. Illustrations.

(Paperback)

Horrible Harry has a new favorite insect: earwigs. When Miss Mackle assigns groups in Room 3B to act out different fairy tales, Harry has a chance to teach the kids about his favorite bug. Will they think his play is hilarious--or horrible Original.

(Hardback)

The beloved series comes to an end after 30 years with this finale. The last day of third grade is fast approaching, and when Harry finally admits that his family is moving to a whole other town, Doug can't believe his ears. How will he survive fourth grade without his best friend Illustrations.