Leonardo da Vinci

Study of a Man in Profile Facing a Grotesque Figure
c. 1491-95

Sketches for the Virgin and Child with Saint Anne and the Infant Saint John the Baptist
c. 1499-1500

Designs for an Adoration of the Christ Child
c. 1482-83

Proportional Study of the Eye and the Face
c. 1489

Studies of Male Figures
c. 1480-81