Pennsylvania Pavilion for World's Fair, New York, 1939: Suspended aluminum bridge: plan, elevations, section, (1/8" = 1'-0")

Acrylic, graphite, and computer print-out on off-white wove paper

Graphite on off-white wove paper

Charcoal on paper

Watercolor over graphite on off-white wove paper

Off-white card

Black ink on off-white wove paper

Graphite on paper

Graphite on off-white wove paper

Watercolor and white gouache over graphite on off-white wove paper

Watercolor on off-white wove paper

Graphite, crayon and colored pencil on paper

Graphite on brown wove paper