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

Graphite on paper, mounted

Gouache on brown wove paper

Graphite

Acrylic and wax on coated paper

Unframed drawing; ink on paper

Black crayon on paper

Colored marker on paper

Black and white chalk on blue antique laid paper

Charcoal on blue laid paper

Colored marker, black marker and pen on graph paper, and adhesive on paper

Graphite on paper

Watercolor and graphite on white wove paper