Untitled (notes, left page); Untitled (calculations and notes, right page)

Black and colored crayon on off-white wove paper

Colored marker and blue pen on paper

Graphite and blue crayon on paper

Graphite and colored pencil on paper

Graphite on paper with torn lower left corner

Green crayon on paper

Green crayon on paper

Ink on paper

Black crayon on paper

Colored crayons on paper

Watercolor with black ink on paper

Black ink on paper