Untitled (adhered note with measurements, left page); Untitled (measurements and calculations, right page)

Black ink on blue-ruled white graph paper

Colored marker on paper

Watercolor over graphite on heavy white paper

Graphite on paper

Oil and crayon on wove paper

Black ink and graphite on white wove paper

Graphite on off-white wove paper and mounted to off-white wove paper

Ink on vellum

Colored crayon on paper, mounted

Watercolor and white gouache on off-white wove paper

Graphite on off-white wove paper

Graphite on paper