Milton Glaser (Reverse?) Deja Vu

After we reviewed Milton Glaser's record album cover for The Sound of Harlem from 1964 and his Bob Dylan poster from 1967, I tried to figure out where I could have previously seen such bright, yet dimensionally flat color planes.

Milton Glaser's The Sound of Harlem, 1964.

Then I remembered that I had seen similar color planes in the animation style of the movie with the Beatles, The Yellow Submarine. Through some researching, I found out that the movie was produced in 1968, not very long after Milton Glaser designed the record cover for The Sound of Harlem. Heinz Edelmann, the art director known for his illustrations in The Yellow Submarine, was in fact, a friend of Milton Glaser, so influence or collaboration is not unlikely at all.

The Beatles by Heinz Edelmann
in The Yellow Submarine