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

Colored crayons on paper

Ink and colored crayons on paper

Graphite on paper

Graphite on off-white wove paper

Graphite on paper

Crayon on paper

Colored marker, paper, and adhesive on paper

Black marker on paper

Colored and metallic marker and black pen on paper

Graphite and colored pencil on paper

Gouache, black ink, and graphite on white wove paper

Black marker on paper