Len Janson

Len Janson is a writer. Janson has most recently worked on The Flintstones: Wind-Up Wilma (1981), The Hanna-Barbera Hall of Fame: Yabba Dabba Doo II (1979) and Daffy Duck and Porky Pig Meet the Groovie Goolies (1972).

About Len Janson

• Name: Len Janson

Filmography as Writer

• The Flintstones: Wind-Up Wilma (1981)
• The Hanna-Barbera Hall of Fame: Yabba Dabba Doo II (1979)
• Daffy Duck and Porky Pig Meet the Groovie Goolies (1972)