Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Outside stairs at servant porch; exterior door entry: plan, sections, elevations, details (1/2" , 1 1/2" , and 6" = 1'0")

Graphite on off-white wove paper (recto and verso)

Graphite on off-white wove paper

Black ink on off-white wove paper

Gray tempera, black ink, graphite, and scratchwork on off-white wove paper; verso: black ink and graphite

Graphite on off-white wove paper

Charcoal, white pencil, red and blue watercolor (or ink) on off-white wove paper

Graphite on off-white wove paper

Watercolor and black ink on off-white laid paper, mounted to off-white cardboard

Graphite and blue crayon on off-white wove paper

Graphite on paper

Graphite on off-white wove paper

Charcoal on off-white laid paper; verso: graphite