What causes tickling? : Leonardo da Vinci
Candles on his head : Michelangelo Buonarroti
The uninvited guest : Peter Bruegel
She introduced laughter : Sofonisba Anguissola
From riches to rags : Rembrandt van Rijn
Old man mad about drawing : Katsushika Hokusai
Riding a tall horse : Mary Cassatt
Risking his life for art : Vincent van Gogh
Mountain climber, mother, and model : Käthe Kollwitz
King of the wild beasts : Henri Matisse
At the bullfights : Pablo Picasso
Clowning around : Marc Chagall
The art of chess : Marcel Duchamp
Skulls and flowers : Georgia O'Keefe
Handstands on the beach : William H. Johnson
How to shock the world every twenty-four hours : Salvador Dali
A tiger on the stairway : Isamu Noguchi
Frog-face and the walking flower : Diego Rivera and Frida Kahlo
Eating the entire birthday cake : Andy Warhol.
