Basil Wolverton "Open Mind 59-B" Unpublished Greeting Card Illustration Original

Basil Wolverton "Open Mind 59-B" Unpublished Greeting Card Illustration Original Art (Barker Greeting Cards, c.1956).
"Im Glad YouHave an Open Mind---" Designed as a gag greeting card, the inside punchline is "Because It Goes Better With My Split Personality!" Created in black ballpoint pen on 8" x 9" paper, folded down the center like a card. Wolverton printed his name on what would be theback of the card. In Very Good condition.