Detail of Doorway Carvings, Pazzi Chapel, Santa Croce, Florence, Italy

Transparent and opaque watercolor on white wove paper

Graphite on paper

Watercolor, black ink, and metallic paint over graphite on buff wove paper

Black felt-tipped pen on yellowed newsprint paper

Graphite on thin off-white wove paper

Red and white chalk on gray modern laid paper

Ink and watercolor on off-white modern laid paper

Pastel on cardboard?

Black ink and graphite on off-white wove paper

Charcoal on cream laid paper

Graphite on off-white wove paper

Crayon on paper