In the spring of 2005, Chuck was invited by the University of Iowa Hospitals and Clinics to submit a proposal of four large paintings that would be on permanent display in the Pediatrics Wing. These paintings were to be based on illustrations from Jungle Gym Jitters.

This was the largest and last mural painted for the University of Iowa, and one which took Chuck several months to complete.

Rollercoaster includes ninety characters, including two of the author's childhood favorites, Popeye the sailor and the Grinch.