The collection cabinets open this time to bring forth issue #157 of Mad magazine, published in March of 1973. By this time there were four films in the Apes series, with another in the works to be released the following year, with a TV series soon after that. Enjoy this Mort Drucker-drawn overview of the films titled "The Milking Of The Planet That Went Ape."
(Click on images to enlarge.)
Bonus: Below, an ad I clipped from a newspaper sometime around 1974.
Bonus: below, a unique photo of McDowell as Cornelius in a rare good mood; most likely thinking of his fiancee, Zira.
Below is one of my pencil drawings of Galen from the TV series, drawn in 1974 sometime, probably while in homeroom. I was big into Apes that year!