Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Revised duct location: plan for 208 (1/4" = 1'-0")

Graphite on off-white wove tracing paper

Graphite on paper

Graphite on paper

Graphite on off-white laid paper

Charcoal on off-white laid paper

Black crayon on off-white wove paper

Black ink and pen on cream-colored rag paper

Graphite on thin off-white wove paper

Black, brown, and red-brown ink on off-white wove card prepared irregularly with spattered blue-gray watercolor(?), areas of scraping throughout; verso: graphite and black ink

Graphite on white wove translucent paper

Graphite on off-white wove paper

Black ink and charcoal on cream laid paper