From Cartoon Brew:
Created six years after John Lennon’s assassination in 1980, Yoko Ono and Oscar-winning animator and historian John Canemaker’s cartoon short John Lennon Sketchbook has finally appeared on YouTube. Executive produced by Ono and designed, directed, and animated by Canemaker, it is a poignant peek into the fertile mind of a Beatle whose prodigious talents extended well past creating immortal music.
Thanks to Cartoon Brew and Scott Thill for alerting me to this great cartoon showing up on YouTube. Cartoon Brew is a fantastic source for animation news, updated daily. You should check it out.