Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Location of lights in swimming pool

Black ink and pen on cream-colored rag paper

Black ink and gray wash on cream moderately textured wove paper

Hammered marks on white transfer paper

Graphite on off-white wove paper

Charcoal and yellow and white chalk on brown wove paper

Graphite on thin modern laid paper

Graphite on thin off-white wove paper

Watercolor, black ink, and charcoal on cream modern laid paper, edges taped

Watercolor and black ink on off-white wove paper

Collage of found cardboard and crayon

Black ink and graphite on off-white wove paper

Graphite on graph paper