Shop › Whimsy Bison Portrait Poster Image 1 of 9 Image 2 of 9 Image 3 of 9 Image 4 of 9 Image 5 of 9 Image 6 of 9 Image 7 of 9 Image 8 of 9 Image 9 of 9 Whimsy Bison Portrait Poster from $19.50 Museum-quality posters made on thick matte paper. Size: Select Size 11″×14″ 12″×16″ 16″×24″ 18″×24″ 20″×30″ 24″×32″ 28″×40″ 8″×12″ Add To Cart Added! Museum-quality posters made on thick matte paper.