Untitled (bleed-through of previous page, left page); Untitled (design for "Lichtplastik," right page)

Graphite on off-white wove paper

Black crayon on paper

Graphite on paper

Tracings, mostly in graphite, occasionally supplemented with gray wash, on cream antique laid paper

Graphite on paper

Red chalk on cream antique laid paper, laid down on a decorated mount

Graphite and colored crayon on paper

Black crayon on paper

Brown ink on parchment, framing line in brown ink

Colored marker, black pen, graphite, and white pigment on paper

Black ink on off-white wove paper

Graphite and black crayon with touches of white chalk on tracing paper