Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Section through pool wing (1 1/2" = 1'-0")

Graphite on thin off-white wove paper

Charcoal on thick beige wove paper

Charcoal and graphite on off-white laid paper

Watercolor on cream wove paper

Black ink, gray gouache, and red-brown watercolor on off-white laid paper; verso: black ink

Watercolor over graphite on off-white illustration board

Graphite on paper

Black crayon on paper

Black and brown ink and graphite on cream wove paper

Brown wash with scraping on white wove paper

Black crayon and ink on paper

Black chalk on off-white laid paper, fixed