Untitled (blank with graphite transfer, left page); Untitled (notes and designs for Condor planes, right page)

Charcoal on off-white laid paper

Brown ink and brown wash over black chalk on cream antique laid paper

Graphite on off-white wove paper

Graphite on cream wove paper

Colored marker, black pen, transparent sheets, paper, and adhesive tape on paper

Graphite on heavy ivory wove paper

Black crayon on paper

Charcoal on paper mounted on masonite in artist's box

Black ink on tracing paper, darkened and mounted to laid paper

Graphite on paper

Black crayon and ink ; black crayon on paper

Graphite on beige paper