How many movies have Brenda Vaccaro and Joseph Barbera collaborated on?

They have worked on 3 movies together! Their first movie together was The Jetsons Meet the Flintstones (1987) while their highest rated movie together was The 1st 13th Annual Fancy Anvil Awards Show Program Special: Live in Stereo (2002). They have not worked together since Cartoon Network Christmas: Yuletide Follies (2004). They are most known for their family films together.