Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Acoustic ceiling plans (3" , 1/2" = 1'-0")

Black chalk and charcoal on off-white laid paper

Pastel on composition board

Colored pencil and graphite on brown cardboard

Watercolor and graphite on white wove paper

Gouache on off-white wove paper

Ink on paper

Black ink on machine made rag wove paper

Black ink on off-white wove paper

Black ink on off-white wove paper

Watercolor and graphite on wove paper

Graphite on paper

Black ink on off-white wove paper