Portrait of the Duke and Duchess of Brabant

Charcoal and black and white chalk, squared in charcoal, on blue-gray wove paper

Transparent and opaque watercolor over traces of black chalk on off-white wove paper

Brown ink, brown wash, and graphite on cream wove paper

Brown ink on tracing paper, darkened and mounted to wove paper

Dark brown ink on white modern laid paper.

Black chalk on off-white modern laid paper

Black chalk with touches of red and white chalk on off-white antique laid paper, laid down on a decorated mount

Black and brown ink with brown wash, on cream wove paper, framing lines in black and red ink

Charcoal on tan wove paper

Graphite on white wove paper

Gray wash, black and brown ink, over traces of black chalk on off-white paper