Untitled (calculations, left page); Untitled (watercolor sketch, right page)

Graphite on tan wove paper

Graphite on paper

Graphite on paper

Alkyd and modified oil paint on machine-made laid paper

Graphite on paper

Black crayon on paper

Charcoal on paper

Graphite on paper

Graphite on paper, mounted

Paper

Graphite on paper

Black marker and black pen on paper