33 books • 2 series
I Did It, I'm Sorry (Picture Puffin Books)
La Escapada de Marvin El Mono
Fanny's Dream
The Escape of Marvin the Ape CD-Rom
It's a Spoon, Not a Shovel
A Job for Wittilda (Picture Puffin Books)
The Escape of Marvin the Ape
Buehner C. & M. : Escape of Marvin the Ape (Lib)
Buehner C. & M. : Escape of Marvin the Ape (HB)