Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Third floor, outlets #25-27: plan and section (1/4" and 3" = 1'-0" )

Watercolor on off-white wove paper

Charcoal and graphite on vellum tracing paper

Black ink on off-white (handmade?) wove paper

Crayon on paper

Black ink on cream wove paper

Black fiber-tip ink on off-white wove paper

Graphite on buff wove paper, mounted to buff cardboard

Watercolor on off-white wove paper mounted to buff wove

Charcoal on thick beige wove paper

Graphite and blue and black crayon on off-white wove paper

Watercolor and white gouache on off-white wove paper

Black chalk on buff tracing paper