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

Watercolor over graphite on off-white wove paper

Charcoal on blue laid paper

Watercolor on paper

Charcoal on cream laid paper

Crayon on off-white wove paper

Very dry pen in oilly medium on commercially lined yellow paper

Black ink on off-white wove paper

Black crayon on off-white wove paper

Graphite on paper

Crayon on paper

Black ink on tan wove paper

Graphite on off-white wove paper