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

Black ink, graphite, and yellow chalk on off-white wove paper

Opaque watercolor on board

Very dry pen in oilly medium on commercially lined yellow paper

Graphite and ink on paper

Graphite on off-white wove paper

Watercolor on off-white wove paper

Sketchbook with gray cardboard covers, held together by white spiral wire

Black ink on off-white wove paper

Mixed media on paper

Red conté crayon on ivory tracing paper

Graphite on off-white wove paper

Black and red inks and graphite on tracing paper