Untitled (bleed-through of previous page and color transfer, left page); Untitled (notes and measurements for light sculptures, right page)

Black conté crayon on ivory tracing paper

Graphite on off-white wove paper

Colored marker on paper

Black ink, gray wash, and white gouache over graphite on tan wove paper with ruled lines

Graphite on buff paper mounted on board

Brown ink, with touches of red chalk, on off-white antique laid paper

Unmounted drawing: ink and color on paper

Incised line and Aquarelle on white wove paper

Graphite with yellow and green crayon on paper

Charcoal and graphite on off-white laid paper

Brown ink on cream wove paper, foxed, laid down. In some areas the acidic ink has eaten into the paper; pin holes at the four corners.