The Castle of Rivieren at Ganshoren

Brown ink and brown wash over black chalk on three pieces of cream antique laid paper; some (later?) gray wash on Adam's crotch; partial framing line in brown ink; verso: faint black chalk sketches of architectural motifs

Brown ink and violet wash on cream antique laid paper

Brown ink on parchment

Brown ink and brown wash on wood

Brown ink and black chalk on cream antique laid paper, partial framing lines in black chalk at top, right and bottom left

Brown ink, brown wash, and white opaque watercolor over black chalk on blue antique laid paper

Brown ink and gray, yellow, and bluish-green wash over black chalk, incised, on cream antique laid paper, mounted on an album leaf; verso: composition traced through on verso in black chalk, partially incised

Brown ink over black chalk and incidental pink wash, on light tan antique laid paper, laid down, framing lines in brown ink and dark brown ink

Gray and brown ink, white and pink opaque watercolor, on gray-blue prepared paper, partial framing line in gray ink

Brown ink and brown wash over black chalk on cream antique laid paper, laid down

Brown ink and brown wash over touches of black chalk, incised, on off-white antique laid paper, framing line in brown ink, laid down on a gold-bordered mount

Brown ink, brown wash, and black chalk on off-white antique laid paper, framing line in brown ink