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

Brown ink with touches of red chalk on tan antique laid paper

Colored marker on paper

Colored marker and black pen on paper

Graphite on white paper

Brown ink over black chalk on off-white antique laid paper

Black and white chalk on blue antique laid paper

Watercolor, gouache, black chalk, and graphite on brown wove paper

Graphite with red pastel on off-white modern laid paper

Graphite on paper

Black ink and gray wash on cream laid paper

Colored marker, opaque watercolor, graphite and blue pen on paper

Black marker on paper