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" )

Sumi ink on Japanese paper, mounted on board

Black ink on off-white wove paper

Verso: graphite on off-white laid paper

Transparent and opaque watercolor over graphite on off-white wove paper mounted on cardboard

Watercolor over graphite on off-white wove paper

Graphite on heavy cream wove paper

Black ink on off-white wove paper

Graphite on paper

Graphite on off-white wove paper

Black ink and charcoal on beige wove paper

Black ink over graphite on thin cream tracing paper, mounted to cardboard

Graphite on off-white wove paper