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

Black ink and gray wash on cream moderately textured wove paper

Watercolor over graphite on off-white illustration board

Graphite on tan wove paper

Black ink on off-white wove paper; verso: black ink and gray wash

Black pen on paper

Black, red and white chalk on blue wove paper, discolored to brown

Black ink, gray wash, and graphite on off-white wove paper

Gray and brown ink on off-white laid paper

Graphite on heavy cream wove paper

Graphite on off-white wove paper

Graphite on cream wove paper

Colored marker on paper