Turning freelance in 1948 , he did cartoon illustrations for magazines and advertising campaigns .
He immigrated to the USA in 1938 to work with Walt Disney Productions , where he was a story writer and a collaborator on several Disney films .
Turning freelance in 1948 , story writer did cartoon illustrations for magazines and advertising campaigns .
He immigrated to the USA in 1938 to work with Walt Disney Productions , where he was a story writer and a collaborator on several Disney films .