Untitled (bleed-through of previous page with marker stain, left page); Untitled (sketches of past sky events, right page)

Black crayon on paper

Graphite and colored pencil on paper

Colored marker on paper

Sketchbook with green-paper-covered cardboard covers

Colored marker, black pen, and blue pen on paper

Graphite on buff wove paper

Black chalk and charcoal on off-white laid paper

Graphite on off-white modern laid paper

Black ink and black wash over red chalk on white antique laid paper

Watercolor over graphite on off-white wove paper; verso: brown ink and graphite

Black crayon on paper