Pennsylvania Pavilion for World's Fair, New York, 1939: Hall of Progress, display case: plans and sections (1/4" and 3" = 1'-0" )

Black ink, graphite, and yellow chalk on off-white wove paper

Black ink, graphite, and yellow chalk on off-white wove paper

Black chalk and watercolor on off-white wove paper

Graphite on paper

Sketchbook with paper-covered cardboard covers

Black crayon on thin ivory wove paper

Black ink on cream wove paper; verso: black ink, blue watercolor, and green and orange crayon

Gouache, gray wash, and graphite on off-white wove paper

Graphite on off-white wove paper; verso: charcoal

Graphite on off-white wove paper

Graphite on paper

Charcoal and acrylic on paper