Wednesday Illustration Day.
Even after he joined Mad in 1961 Paul Coker did a lot of free lance work as a commercial illustrator. I know he did a lot of gift card stuff, although I never saw a lot of them. Here he is illustrating a quarterly calendar and note pad for an appliance company. He may have done more, but these are consecutive. The fifth one is by the illustrator who took over from him in a similar style.