View of the Katelijnepoort in Mechelen

Brown ink and brown wash over black chalk on cream antique laid paper, mounted, framing lines in black ink

Brown ink, brown and gray wash, green transparent watercolor, and touches of white chalk on the sheet of an account book, framing line in black ink and partial framing line in brown ink at bottom

Brown ink and black chalk on cream antique laid paper, incised in design areas and compass-point hole at center, attached to mount with two framing lines in brown ink

Brown ink and brown wash over black chalk with touches of graphite on off-white antique laid paper; framing lines in brown ink

Transparent and opaque watercolor on antique laid paper

Black chalk and brown wash on parchment, framing line in black chalk

Black and red chalk and white opaque watercolor on blue paper, framing line in brown ink

Black and white chalk, squared in graphite, on faded blue antique laid paper; verso: black and white chalk counterproof with touches of ochre, with squaring transferred from recto

Watercolor over graphite on cream antique laid paper

Black and red chalk on cream antique laid paper

Brown ink and black chalk on light tan antique laid paper

Brown ink and red chalk on cream antique laid paper; verso: brown ink