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

Black ink on tan wove paper (recto and verso)

Black ink on off-white wove paper (recto and verso)

Graphite on paper

Metalpoint on white paperboard prepared with Shiva titanium white casein

Gray and blue wash over graphite on ivory wove paper

Black crayon with graphite and blue and green crayon on cream wove paper

Watercolor on cream wove paper

Incised line and Aquarelle on white wove paper

Watercolor and white gouache over graphite on buff wove paper

Black ink and charcoal on cream laid paper

Watercolor over graphite on off-white wove paper

Colored crayons on paper