S1·E14 Henry the Menace/Come Fly with Me/Camping Out
Aired December 9, 1985
Synopsis
Henry's father comes to visit, and he tells Dennis what Henry was like as a little boy. Not surprisingly, the child-sized Henry and the present-day Dennis had a lot in common. They both create chaos wherever they go. Dennis and PeeBee enter a friendly challenge of building and flying their own airplanes.