Untitled (notes on planets and bleed-through of previous page, left page); Untitled (calculations on back endpaper, right page)

Black chalk on off-white wove paper

Black crayon on paper

Magic marker, Bic pen, whiteout, coffee, cray pas

Watercolor over graphite on off-white wove paper

Graphite on paper

Graphite on paper

Black ink on deer skin (charba)

Paper

Graphite on parchment

Colored marker and price sticker on paper

Brown ink, gray ink, watercolor, and graphite on cream antique laid paper

Brown ink, gray and brown wash, graphite and black chalk on cream antique laid paper