Untitled (adhered sketches of light sculptures, left page); Untitled (adhered sketches of light sculptures from 1972, right page)

Watercolor on off-white wove paper

Black and aqua marker on paper

Charcoal on cream laid paper

Green crayon on paper

Colored marker and black ink on paper

Colored marker on paper

Brown ink over black chalk on off-white antique laid paper

Sketchbook with blue cardboard covers with impressed design

Natural black chalk and natural yellow chalk on handmade, green laid paper

Graphite on paper

Brown wash over graphite on ivory wove paper

Graphite on paper