Basil Wolverton "Open Mind" Greeting Card Illustration ORIGINAL ART - LEGENDARY!

Basil Wolverton "Open Mind 59-A" Unpublished Greeting Card Illustration Original Art (Barker Greeting Cards, c. 1956). 
Basil Wolverton is a legendary artist that has influenced countless artists in the comics and illustrative art hall of fame.  "If You Have an Open Mind---" Designed as a gag greeting card, the inside punchline is "Why Don't We Get Out In the Open Some Time?" 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 the back of the card. The card front is toned. In Very Good condition.