Untitled (bleed-through of previous page and color transfer, left page); Untitled (pavillion design for Bonn competition and color transfer, right page)

Black marker and black pen on paper

Black ink and gray wash on yellow laid paper

Brown ink on white antique laid paper, prepared with red chalk wash, laid down on antique laid paper

Sketchbook with brown cloth-covered cardboard covers

Brown ink and brown wash over black chalk on cream antique laid paper adhered to cream card; verso: black chalk

Graphite on paper

Black chalk, heightened with white chalk, on gray prepared antique laid paper; verso: red chalk

Collage of cut blue wove paper on yellow-brown wove paper

Graphite and watercolor on off-white paper

Graphite on cream wove paper

Watercolor and white gouache on heavy off-white wove paper

Colored marker on paper