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

Black ink and gray wash over graphite on off-white wove paper

Graphite on off-white wove paper; verso covered in red chalk for transfer

Graphite on cream laid paper

Black ink on off-white wove paper

Graphite on paper

Black ink and charcoal on cream laid paper, edges taped

Watercolor and white gouache on heavy off-white wove paper

Watercolor and white gouache on off-white wove paper

Watercolor, pastel and charcoal, with some scoring, on white wove paper

Watercolor on cream wove paper

Watercolor on off-white wove paper

Graphite on off-white laid paper