Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Air conditioning units: plans, elevation, sections (1/4" and 3/4" = 1'-0")

Black ink on cream wove paper

Watercolor over graphite on off-white wove paper

Graphite on off-white wove paper

C-print (cyan color separation) mounted on foam-core with felt-tipped pen numbers, black ink grid, acrylic airbrush marks, and masking tape

Black ink on off-white wove paper

Red and white chalk on gray modern laid paper

Graphite on dark cream wove paper

Black chalk and charcoal on off-white laid paper

Black chalk on cream laid paper

Graphite on cream wove paper

Charcoal on blue laid paper

Incised line and Aquarelle on white wove paper