How many movies have Henry Corden and William Hanna collaborated on?

They have worked on 11 movies together! Their first movie together was Yogi's Ark Lark (1972) while their highest rated movie together was Scooby-Doo's Spookiest Tales (2003). They have not worked together since Scooby-Doo's Spookiest Tales (2003). They are most known for their animation films together.