Sketch for sculpture, "Roebling"; verso: sketch for sculpture, "Roebling"

Charcoal on cream laid paper

Graphite on paper

Black ink and gray wash on ivory paper laid down on white board

Watercolor over graphite on off-white wove paper

Oil and watercolor over graphite on cream wove paper

Watercolor and graphite on white wove paper

Watercolor over graphite on cream wove paper

Watercolor on off-white wove paper mounted to buff wove

Graphite and charcoal on off-white wove paper

Graphite on blue-flecked gray laid paper

Charcoal on cream laid paper

Black ink and colored chalk on translucent buff wove paper