Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Revision of wall between pool and recreation room: elevation, sections and details (1/2" , 1 1/2" , and 3" =1"-0" )

Black ink and wash and white gouache on off-white wove paper

Graphite on off-white wove paper

Colored pencil, crayon, and graphite on cut brown paper bag

Charcoal on off-white laid paper

Graphite on off-white wove paper

Graphite on paper

Turpentine wash with oil and oil crayon on cream laid paper

Sketchbook with beige cloth-covered cardboard covers

Watercolor on off-white wove paper

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

Graphite on paper

Watercolor and graphite on off-white wove paper