GCGEPU-167 1968 Ditzler advertisement Gil Elvgren (1914-1980)

The picture has something of this: beach, people, woman, summer, leisure, ocean, vacation, seashore, wear, sand, sea, water, bikini, two, recreation, girl, fun.
Perhaps it’s a painting of a woman in a red bikini sitting on the beach with a dog in front of a yellow car and a yellow truck in the background.