Who worked with animation producer George Dunning and worked as Eric Porter's animation director?
Marco Polo Junior Versus the Red Dragon:  The two sequence directors were Porter's animation director Cam Ford (who had previously worked on the Beatles' "Yellow Submarine") and Peter Gardiner. Yellow Submarine (film): Yellow Submarine (also known as The Beatles: Yellow Submarine) is a 1968 British animated musical fantasy comedy film inspired by the music of the Beatles, directed by animation producer George Dunning, and produced by United Artists and King Features Syndicate.
Cam Ford