Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Study and bedroom chimney details (1/4" = 1'0")

Charcoal on blue laid paper

Graphite on paper

Graphite on paper

Graphite on translucent vellum paper

Graphite on brown tracing paper

Graphite on off-white wove paper

Graphite on translucent wove paper

Black ink, reddish-brown watercolor, and turquoise crayon on dark cream wove paper, darkened

Graphite on buff wove paper

Black ink and charcoal on beige wove paper

Watercolor over graphite on off-white wove paper

Black crayon on off-white laid paper