Dante and Virgil in the Skiff of Phlegyas are Hailed by Filippo Argenti (from Dante's "Divine Comedy"); verso: sketch for "The Six-Footed Serpent Attacking Agnolo Brunelleschi"(?)

Black ink and graphite on white paper; verso: black ink and graphite

Black chalk on off-white laid paper

Blue and gray watercolor faded to gray over graphite on off-white paper

Graphite, black ink, and gray wash on cream wove paper, darkened

Graphite on heavy cream wove paper, attached to sketchbook block

Graphite, red, black, and white chalk, and gray wash on brown wove paper

Metalpoint on prepared paper

Graphite and gray wash with touches of white gouache on cream wove paper

Brown ink and wash on buff paper, discolored

Watercolor and graphite on off-white wove paper