Detail of Immaculate Conception, after Piero di Cosimo

Red chalk on blue laid paper

Incised line and Aquarelle on white wove paper

Charcoal on blue laid paper

Watercolor and graphite on white wove paper

Black ink and charcoal on cream laid paper

Black ink on off-white wove paper

Transparent and opaque watercolor and graphite on white wove paper

Graphite on off-white wove paper

Graphite on off-white wove paper

Charcoal on buff wove paper

Black ink and gray wash on cream laid paper

Graphite on white laid paper