Untitled (notes and prism designs, left page); Untitled (notes, right page)

Graphite on paper

Graphite on paper

Charcoal, stumped, and pastel on cream laid paper

Ink on paper

Charcoal and black ink on cream laid paper

Black crayon on paper

Black crayon on paper

Graphite on paper

Black crayon on paper

Black ink on translucent vellum paper

Graphite on off-white wove paper

Green and purple crayon on paper