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

Colored marker on paper

Graphite and brown crayon on paper

Colored marker on paper

Graphite on paper

Watercolor, gouache, and graphite on board

Black chalk with touches of white chalk on blue antique laid paper

Black ink, gray wash, and purple crayon on cream wove paper

Black and colored crayons on off-white wove paper mounted to cream wove paper

Graphite on off-white wove paper

Drawing on woodblock, prepared for engraving

Watercolor and white gouache over graphite on wove paper

Charcoal and colored chalk on brown paper