Church of the Cistercian Abbey Altenberg, Odenthal

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

Brown ink over touches of black chalk on off-white antique-laid paper, laid down

Brown ink, brown and gray wash and white opaque watercolor on cream antique laid paper

Brown ink, with some scattered traces of reddish-brown chalk on cream antique laid paper, framing line in brown ink

Brown ink and violet wash on cream antique laid paper

Two kinds of brown ink over black chalk on cream antique laid paper, lined with Japanese paper

Brown ink, brown wash and graphite, squared in graphite and black chalk, incised, on off-white antique laid paper; partial framing line in brown ink and graphite

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

Brown ink and wash, black chalk and white opaque watercolor on brown prepared paper

Black ink, reddish-brown wash, and partially oxidized white opaque watercolor on light tan antique laid paper, framing line in brown ink

Brown ink and white opaque watercolor over black chalk on cream antique laid paper, original partial framing line in brown ink

Brown ink on off-white antique laid paper, framing line in black ink