Notes and diagram of the Legend of the True Cross by Piero della Francesca

Graphite on off-white laid paper

Black ink, graphite, and yellow chalk on off-white wove paper; verso: black ink

Graphite on cream laid paper

Charcoal on cream laid paper

Graphite and colored pastel on gray-green laid paper

Black ink and graphite on thin buff wove paper

Collage elements on off-white wove paper

Graphite and black ink on ivory laid paper

India ink on cream wove ledger paper inscribed in brown ink

Black ink, blue and gray wash, and blue pencil on wove paper

Black ink on off-white wove paper (recto and verso)

Red-orange and yellow-green crayon, and graphite on off-white wove paper