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

Graphite and colored pencil on paper

Colored marker on paper

Black and white chalk on blue-gray wove paper

Colored marker on paper

Unmounted drawing: ink on paper

Graphite on cream wove paper, darkened

Graphite on paper

Graphite, squared, on white wove paper

Pastel on brown paperboard

Black marker on paper

Black chalk, gray wash, and later brown wash, incised, on cream antique laid paper, with a framing line in brown and black ink and black chalk

Graphite on off-white wove paper