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

Watercolor, masking tape and graphite on off-white wove paper

Black ink on off-white wove paper

Black and pink crayon on paper

Oil over graphite on off-white wove paper

Graphite on off-white wove paper

Graphite on off-white wove paper, mounted on cardboard

Black ink and black wash on tan wove paper

Ink on paper

Brown ink on cream wove paper

Graphite on paper

Mixed media on paper

Graphite on off-white wove paper