Tree, from the Background of a Picture by an Early Flemish Master, in the Uffizi Gallery at Florence

Brown and gray ink and brown wash over black chalk on cream antique laid paper, with a framing line in gray ink

Graphite on paper

Black, blue, and yellow crayon on paper

Graphite on cream wove paper

Watercolor over graphite on cream paper

Graphite on paper

Sketchbook with brown cloth-covered cardboard covers

Black crayon on paper

Graphite on paper

Graphite on off-white wove paper

Graphite on paper

Brown ink and brown wash over graphite on light tan antique laid paper