Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Electric cabinet and recess in 220: elevations and sections (6" = 1'-0" and full size)

Charcoal, ink, and watercolor on paper

Watercolor over graphite on off-white wove paper

Black crayon on paper

Incised line and Aquarelle on white wove paper

India ink over graphite on white wove paper

Graphite on off-white wove paper

Black ink on off-white wove paper

Graphite on off-white wove paper

Watercolor and brown ink on cream illustration board

Graphite on tan wove paper

Colored pencil and graphite on off-white modern laid paper

Graphite on thin yellow wove paper, mounted to heavy off-white wove paper