Portret van een architect

Studies for the Virgin and Saints in the Nativity (interior of shutter of the organ in Milan Cathedral)

1592 · Black and white chalk on blue paper

Studies for Apollo and Daphne, Zeus and Juno, Orpheus and Eurydice and other figures (recto and verso)

1560 · Pen and brown, red chalk

Nude Demon Encircled by a Serpent, after Michelangelo's Last Judgment; and Other Figure Studies (recto); Figure Studies (verso)

1548 · Pen and brown ink, brush and brown wash, over red chalk (recto); pen and brown ink, over red chalk (verso)