Untitled (adhered calculations, left page); Untitled (adhered pages of calculations, right page)

Blue, green and black crayon on paper

Graphite on paper

Black chalk and white gouache on blue-brown antique laid paper, laid down to off-white antique laid paper mount

Black marker on paper

Black ink, gray wash, touches of white gouache on cream paper

Blue felt-tip marker on thin off-white wove paper

Black ink on off-white wove paper

Graphite on paper

Graphite on off-white laid paper

Drawing scratched on slide film

Watercolor, white gouache, shell gold, and colored chalks on off-white card; verso: graphite

Black ink on off-white wove paper