Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Elevator cab: plan and elevations (1 1/2" = 1'-0")

Graphite on darkened off-white wove paper

Graphite on cream wove paper

Graphite on off-white wove paper

Black felt-tipped pen on off-white wove paper

Collage of newsprint with opaque watercolor; graphite and scored on off white wove paper

Black ink on off-white wove paper

Graphite on paper

Black ink on off-white wove paper

Charcoal with extensive stumping on blue modern laid paper

Colored pencil and graphite on gray cardboard

Charcoal and orange chalk on blue-gray laid paper

Watercolor, graphite, gouache and black ink on cream wove paper mounted on board