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

Graphite on paper

Graphite on paper

Graphite on tan modern laid paper

Graphite on paper

Graphite on paper

Graphite on off-white wove paper

Blue marker and black pen on paper

Brown wash over graphite on white wove paper

Opaque and transparent watercolor, graphite, and black ink on cream card

Watercolor on paper

Graphite on paper