Basil Wolverton Plop Covers!

When Plop! first started, they would run the front covers on the back, sans text....

Nice huh?

Plop! was the first time i saw Wolverton artwork, so the mag has a special place in my heart....

Now there's one that DC could collect ( and probably make some money on).
¡Viva Plop!

After a while, they just ran them on the front.