Details from the Legend of the True Cross, after Piero della Francesca; verso: Sketch and color wheel with notes

Black ink on off-white wove paper

Black ink on off-white wove paper

Black ink, white gouache, and black crayon on off-white laid paper

Graphite and collage elements on paper

Black chalk on off-white laid paper, fixed

Black ink on white wove paper

Black crayon on cream laid paper

Charcoal on blue laid paper

Collage of decorative papers, graphite, crayon, and pastel on white wove paper

Black ink on white illustration board

Charcoal on off-white laid paper

Graphite and charcoal on paper