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

Black ink and graphite on off-white wove paper

Crayon on paper

Watercolor over graphite on illustration board, waxed

Graphite and gesso on paper

Black ink, graphite, and glue on cream wove paper

Graphite on paper

Charcoal on blue laid paper

Gouache on blue prepared board

Charcoal on off-white laid paper

Graphite on ivory laid paper

Sketchbook with red cloth-covered cardboard covers

Graphite on paper