Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Pipe sleeve and footing, dining terrace: sections (3" = 1'-0")

Graphite on off-white wove paper

Charcoal on gray-blue laid paper

Black crayon on thin ivory wove paper

Black crayon on off-white wove paper

Ink and graphite on paper

Graphite on off-white wove paper

Charcoal and graphite on off-white wove paper

Charcoal on off-white laid paper

Black ink on pale buff wove paper

Watercolor over graphite on off-white wove paper, mounted to off-white cardboard

Black ink and watercolor on thin cream wove paper; verso: watercolor and crayon

Graphite on cream wove paper