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

Black ink on off-white wove paper

Black ink over graphite on cream laid paper

Watercolor and graphite on white wove paper

Graphite on darkened off-white wove paper

Watercolor over graphite on heavy cream wove paper (recto and verso)

Watercolor over graphite on cream wove paper

Verso: graphite on off-white laid paper

Graphite on buff wove paper

Graphite on blue-flecked gray laid paper

Colored pencil and charcoal on cream laid paper

Graphite on cream wove paper

Watercolor on off-white wove paper