Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Curtained enclosure - roof deck 308: plan, elevation, and details (1/2" = 1'-0" and full size)

Red and black conté crayon on ivory tracing paper

Graphite on off-white wove paper

Opaque watercolor on Indian paper

Black ink on off-white wove paper

Black crayon and graphite on off-white wove paper

Black ink on cream wove paper

Graphite on off-white wove paper

Watercolor over graphite on cream card

Ink on paper

Graphite and red chalk with touches of black ink on off-white tissue paper

Graphite on paper

Graphite on paper