Ernest Goes To Camp (1987)
A group of juvenile criminals is sent for vacation to Kamp Kikakee. The clumsy Ernest has to care for them, although he doesn't even know how to take care of himself. The other children at the camp show enmity against them, but the group knows very well how to defend themselves. They do also help the Indian owner of the camp when a brutal mining corporation wants to tear down the camp to mine a rare mineral.
Ernest Goes To Jail (1990)
Ernest P. Worrell, he is a bumbling janitor at a bank. Ernest wants to become a clerk in the bank he is working in. Meanwhile, a criminal in the Draccup penitentiary had murdered an inmate and is now in court. This is when Ernest was chosen for jury duty. Unberknownst to Ernest, he is being set up for a dangerous criminal named Felix Nash (who looks a lot like Ernest). Then Nash knocks out Ernest and switches places with him. However, Ernest realizes what is going on and is trying to escape from the penitentiary and stop Nash, who is taking over his job and his life.
I'm still looking for the official artwork.