Untitled (North American air distances, left page); Untitled (metric information, right page)

Graphite on cream wove paper

Red, black, and white chalk on light-tan antique laid paper, laid down on a decorated mount

Watercolor and white gouache over graphite on off-white wove paper

Graphite on off-white wove paper

Album with black cloth-covered cardboard covers

Brown ink and brown wash on cream antique laid paper, framing lines in red chalk and brown ink, laid down on cream antique laid paper

Colored marker and black pen on paper

Colored pencil, gouache, graphite on vellum

Watercolor and metallic paint on silk, mounted on ivory ribs

Colored marker on paper

Graphite on buff wove paper

Black marker on paper