Playboy abstract

I've been enjoying looking at the sale of original art for Playboy cartoons currently at Heritage auctions. Interestingly, some of the cartoons--from the fifties and sixties, primarily--feature abstract art in the background (associated, perhaps, with the sophisticated image Playboy was trying to create for their ideal reader?) as well as some surprisingly loose "modernistic" brushwork. Here are some details, which I'm too lazy to link to their respective sources. See if you can match them! If you click on each image, turn off pan & zoom (you only need to do this once), then click on "look closer," you can download some super-high-res scans of the pictures.