Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Connectors enclosure detail (full size)

Graphite on off-white wove paper

Graphite on thin off-white wove paper

Black and colored crayons on paper

Charcoal on blue laid paper

Graphite on beige wove paper

Graphite on paper

Graphite on cream laid paper

Graphite on paper

Pastel on white paper

Charcoal on blue laid paper

Charcoal on blue laid paper

Graphite on off-white wove paper