The Circle of Traitors: Alberti Brothers (from Dante's "Divine Comedy")

Black ink, gray wash, blue watercolor, and white gouache on cream wove paper; verso: black ink, gray wash over graphite

Blue and gray wash and graphite on off-white wove paper

Metalpoint on prepared paper

Gray wash and graphite on cream wove paper

Graphite on off-white antique laid paper, joined (sketchbook pages)

Black ink and graphite with corrections in white gouache on white wove paper

Red, brown, and white chalks on cream paper

Watercolor and gouache, with extensive scratchwork, on cream wove paper

Graphite on off-white wove paper

Watercolor with traces of graphite on dark cream paper

Gray ink and graphite on cream wove paper

Graphite, gray wash, and brown ink on cream card