Untitled (blank, left page); Untitled (designs for Condor planes, right page)

Graphite on envelope

Black chalk on off-white antique laid paper

Black, blue and pink crayon on paper

Watercolor and white gouache over graphite on heavy buff wove paper

Black marker on paper

Black ink on heavy off-white wove paper

Black ink on tracing paper

Graphite on paper

Colored marker on paper

Black crayon on paper

Black and metallic marker on paper