Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Third floor and roof plans (1/4" = 1'-0")

Graphite on cream wove paper

Charcoal on Japanese mulberry paper, mounted to beige cardboard

Black ink on slide film, hand colored

Black ink on off-white wove paper

Watercolor on off-white wove paper

Graphite on white wove paper, sprayed with fixative

Watercolor on off-white wove paper from watercolor block

Graphite on paper

Graphite on heavy cream wove paper

Graphite on off-white wove paper

Off-white card

Charcoal on blue-gray laid paper