Pennsylvania Pavilion for World's Fair, New York, 1939: Hall of Progress, propeller: elevation and section (1/4" = 1'-0" )

Watercolor and graphite on off-white wove paper

Charcoal on blue laid paper

Graphite on heavy off-white wove paper

Charcoal and brown ink on cream wove paper, set down to blue-gray card

Graphite on paper

Charcoal on cream laid paper

Graphite on coated off-white wove paper

Black crayon with graphite and blue and green crayon on cream wove paper

Charcoal on off-white laid paper

Watercolor and graphite on white wove paper

Black ink on off-white wove paper

Oil on white cardboard