Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Suggested revision of study terrace, first floor: elevations, section, and details (1/4" and 3" =1"-0" )

Charcoal on off-white laid paper

Black wash on tan wove paper

Graphite on paper

Ink and brown pencil on white wove paper

Graphite on paper

Charcoal on off-white laid paper

Watercolor over graphite on off-white wove paper

Black conté crayon on ivory tracing paper

Graphite on paper

Graphite on off-white wove paper

Watercolor on off-white wove paper mounted to buff wove

Graphite on paper