Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Portable loudspeaker unit: plan, elevation, sections (3" = 1'-0")

Watercolor over graphite on off-white wove paper

Graphite on brown wove paper

Graphite on paper

Charcoal with erasure and stumping on off-white wove paper

Colored pencil on paper

Ink and watercolor on paper

Charcoal and red crayon (?) on off-white wove paper

Oil on tracing paper

Gray wash on off-white wove paper

Charcoal on yellowed cream wove paper

Graphite on off-white wove paper

Crayon on paper