Untitled (bleed-through of previous page, left page); Untitled (Gottfried Wilhelm Leibniz, right page)

Black crayon on paper

Black crayon on paper

Graphite on paper

Ink, wash, gouache, and collage elements on paper

Graphite on paper

Graphite on paper

Black and red marker on paper

Ink on paper

Gray marker on paper, staples, and gray and red marker on paper

Graphite on paper

Colored crayons on paper and mounted

Black and red marker on paper