Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Wall sections (1 1/2" = 1'-0")

Black crayon and ink ; black crayon on paper

Crayon on paper

Sketchbook with tan paper covers

Gray wash and black ink on off-white wove paper

Graphite on thin off-white wove paper

Tempera on purple construction paper

Graphite on paper

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

Crayon on paper

Black ink on cream wove paper

Watercolor on off-white wove paper, mounted to off-white cardboard

Graphite, black ink and an area of black spatter on off-white wove paper; verso: graphite