Pennsylvania Pavilion for World's Fair, New York, 1939: Hall of Progress, guard rail: diagram (1/4" = 1'-0")

Charcoal on off-white laid paper

Graphite on off-white wove paper

Graphite on off-white wove paper

Black ink, charcoal, and colored pencil on cream laid paper

Graphite on translucent wove paper

Graphite on buff wove paper

Oil on off-white wove paper

Graphite on off-white wove paper

Black tempera on cream machine-made wove paper, mounted to off-white laid paper

Black ink, charcoal, and watercolor on cream laid paper, edges taped

Graphite on paper

Black ink over graphite on thin cream tracing paper, mounted to cardboard